D01385920B

US-2x2HR
US-4x4HR
USB Audio/MIDI Interface
REFERENCE MANUAL

Before connecting this unit to a computer, you must download and install dedicated software on the computer.

Contents
1 – Introduction......................................................................... 3
Features....................................................................................................... 3
Conventions used in this manual....................................................... 3
Trademarks................................................................................................. 3
2 - Names and Functions of Parts............................................. 4
Front panel................................................................................................. 4
Rear panel................................................................................................... 5
3 – Installation........................................................................... 6
System requirements.............................................................................. 6
Windows................................................................................................ 6
Mac.......................................................................................................... 6
Apple iOS devices.............................................................................. 6
Supported audio drivers.................................................................. 6
Installing the dedicated software...................................................... 7
Installing the Windows dedicated software............................. 7
Installing the Mac dedicated software....................................... 8
Working with Gatekeeper............................................................... 8
Uninstalling the dedicated software................................................. 9
Uninstalling the Windows dedicated software....................... 9
Uninstalling the Mac dedicated software................................. 9
4 – Preparation......................................................................... 10
Connecting the power.........................................................................10
When using a computer (Windows/Mac)................................10
When using an iOS device............................................................10
Using with an AC adapter.............................................................10
Changing the outlet plug (US-4x4HR only)............................11
Connecting other equipment............................................................11
Connecting with a computer.......................................................12
Connecting with iOS devices.......................................................12
Audio connections..........................................................................12
MIDI connections.............................................................................13
Using direct monitoring......................................................................13
5 – Using the Settings Panel................................................... 14
Opening the Settings Panel...............................................................14
Windows..............................................................................................14
Mac........................................................................................................14
Settings Panel overview......................................................................14
Notification function.............................................................................16
Checking software and firmware versions....................................16
Automatic software and firmware update function..................16
6 – Application Guide.............................................................. 17
DAW software..........................................................................................17
Bundled DAW software..................................................................17
Other DAW software.......................................................................17
Windows....................................................................................................17
macOS........................................................................................................17
iOS................................................................................................................17
7 – Standalone Mode............................................................... 18
Overview...................................................................................................18
Settings in standalone mode.............................................................18
Settings Panel settings...................................................................18
8 – MIDI Implementation Chart.............................................. 19
9 – Troubleshooting................................................................. 20

2 TASCAM US-2x2HR/US-4x4HR

10 – Specifications................................................................... 22
General.......................................................................................................22
Input/output ratings.............................................................................22
Analog inputs....................................................................................22
Analog outputs.................................................................................22
Control input/output ratings.......................................................22
Audio performance...............................................................................22
Computer system requirements.......................................................23
Windows..............................................................................................23
Mac........................................................................................................23
iOS device...........................................................................................23
Supported audio drivers................................................................23
Other...........................................................................................................23
Dimensional drawings..........................................................................24
Block diagram..........................................................................................25

1 – Introduction
FeaturesUS-2x2HRo 2 combo XLR/TRS input jacks
o 2 Ultra-HDDA (High Definition Discrete Architecture) mic
preamps with clear, natural sound quality and super-low
noise
o TRS analog output jacks (LINE OUT 1-2)o 1 headphone output

US-4x4HRo 4 pairs of XLR and TRS inputs
o 4 Ultra-HDDA (High Definition Discrete Architecture) mic
preamps with clear, natural sound quality and super-low
noise

Conventions used in this manual
In this manual, we use the following conventions:o Information shown on a computer display is written like this:“OK”.
o References to “iOS” in this document also include “iPad OS”.
o As necessary, additional information is provided under TIP,
NOTE and CAUTION headings.
TIP
These are tips about how to use the unit.
NOTE
These provide additional explanations and describe special
cases.

o TRS analog output jacks (LINE OUT 1-4)

ATTENTION
Failure to follow these instructions could result in damage toequipment or lost data, for example.

o 2 headphone outpu

VCAUTION

US-2x2HR and US-4x4HR
o Support for high resolution formats up to 24-bit/192kHz

Failure to follow these instructions could result in injury.

o Capable of providing +48V phantom power

Trademarkso Support for direct input of guitars, basses and similar
instrumentso TASCAM is a registered trademark of TEAC Corporation.

o MIDI input and output connectors enable connection withkeyboards and other MIDI devices
o Direct monitoring function allows input monitoring with low
latencyo Loopback function that supports stereo/mono switching of
inputs and outputs (on Windows/Mac)o Microsoft and Windows are either registered trademarks ortrademarks of Microsoft Corporation in the United States
and/or other countries.
o Apple, Mac, macOS, iPad and iPadOS are trademarks of Apple
Inc. in the United States and other countries.
o Lightning is a trademark of Apple Inc.

o USB Type-C port (USB 2.0 standard)o App Store is a service mark of Apple Inc.

o Support for operation on USB bus powero IOS is a trademark or registered trademark of Cisco in the U.S.
and other countries and is used under license.

o US-HR Settings Panel control software has a simple,
functional design and enables making unit settingso ASIO is a trademark of Steinberg Media Technologies GmbH.

o High-performance driver can be set to minimal buffer
sizes and enables recording setups with super-low latency(Windows)
o Angled design provides excellent usability on a desktopo Valuable bundled softwareo Connect with iOS devices including iPado Other company names, product names and logos in thisdocument are the trademarks or registered trademarks of
their respective owners.

Note about computer operation
If you are unsure about anything related to the basic operationof a computer when it is mentioned in an explanation in thismanual, please refer to the computer operation manual.
To use this unit with a computer, dedicated software must be
installed on the computer.
For details about software installation, see “Installing thededicated software” on page 7.

TASCAM US-2x2HR/US-4x4HR 3

2 - Names and Functions of Parts
Front panel
US-2x2HR

US-4x4HR

1 SIG indicators

9 IN1/IN2 jacks

These light green when signals (of at least −32 dBFS) are
input.

2 GAIN knobs
Use to adjust the input levels of the input jacks.
Adjust these so that the PEAK indicators do not light red.

3 PEAK indicators
These light red when signals are about to distort (−1 dBFS or
higher).

4 USB indicator
This lights when the USB connection is working.

0 IN3/IN4 jacks (US-4x4HR only)

5 LINE OUT knob
Use to adjust the output level of the LINE OUT (BALANCED)
1–2 (t) jacks on the back of the unit.

6 PHONES knob
Use to adjust the output level of the PHONES jack (jacks on US-4x4HR).

On the US-2x2HR, these are XLR/TRS combo jacks for analog
input.
On the US-4x4HR, these are separate XLR and standard TRS
jacks for analog input.
These support high impedance input, including direct guitar
input.
Use the MIC/LINE INST switches (q) on the front of the unit
to enable balanced line (MIC/LINE) input or unbalanced(INST) input for the standard TRS jacks.
When directly connecting a guitar, bass or other instrument,
set the MIC/LINE INST switch (q) to INST.

andVCAUTION
Before connecting headphones, minimize the volume with
the PHONES knob. Failure to do so could result in a sudden
loud noise that could harm hearing, for example.

7 Phantom power indicator
The indicator lights when the phantom power switch is set
to +48V.
ATTENTION
When operating the US-4x4HR with USB bus power, use acommercially-available Type-C–Type-C cable to connect it toa USB Type-C port on the computer. If there is a problem withthe power supply, the phantom power indicator will blink. In
this case, use the included AC adapter (PS-P1220E, DC12 V).

8 Phantom power switch
Use this switch to provide +48 V phantom power to theIN1 and IN2 XLR jacks (and IN3/IN4 on the US-4x4HR). (see“Connecting microphones” on page 12)
VCAUTION
Set the LINE OUT and PHONES knobs to their minimum
values before changing the phantom power setting.
Depending on the connected mics, sudden loud noises frommonitoring equipment could occur, and this could damage
the equipment or harm hearing.

These XLR analog mic input and standard line level TRS jacks
are balanced input jacks.
NOTE
On the US-4x4HR, IN1/IN2 (9) and IN3/IN4 (0) inputs eachhave two jacks (XLR and TRS). Do not input signals throughboth jacks of the same input at the same time. If signals are
input through both at the same time, neither signal will bereceived properly.

q MIC/LINE INST switches
Set according to the IN1/IN2 jack input sources.
Set to MIC/LINE when connecting an electronic instrument,
audio device, mic or similar equipment.
Set to INST when connecting a guitar, bass or otherequipment with high output impedance.

w MONITOR BALANCE knob
When the Settings Panel LINE OUT 1-2 or LINE OUT 3-4
setting is Monitor Mix, use this to adjust the monitoringbalance between the input signals from the input jacks andthe output signals from the computer. (see “Using direct
monitoring” on page 13)
The volume of signals input through this unit’s input jacks
increase the more the MONITOR BALANCE knob is set to theleft (INPUT) and signals output from the computer increase
the more this is set to the right (COMPUTER).
This knob does not affect the recording level of input signals.

e PHONES jackUse this standard stereo phone jack to connect stereo
headphones. (Useandjacks on US-4x4HR.)
These output the same signals as the LINE OUT (BALANCED)
1-2 jacks.
Use an adapter to connect headphones with a mini plug.
NOTE
The same signals are output from both theof the US-4x4HR.

4 TASCAM US-2x2HR/US-4x4HR

and

jacks

2 - Names and Functions of Parts
Rear panel
US-2x2HR

US-4x4HR

r LINE OUT (BALANCED) 3-4 jacks (US-4x4HR only)o DC IN 5V connector (US-2x2HR only)

These standard TRS jacks are analog line outputs.
i TRS (Tip: HOT, Ring: COLD, Sleeve: GND)t LINE OUT (BALANCED) 1-2 jacks
These standard TRS jacks are analog line outputs.
i TRS (Tip: HOT, Ring: COLD, Sleeve: GND)
The signals output from the LINE OUT (BALANCED) 1-2 jacks(1-4 jacks on US-4x4HR) can be set in the Settings Panel. (see“Settings Panel overview” on page 14)

y MIDI OUT connector
This 5-pin DIN is a standard MIDI output connector.
This outputs MIDI signals.

u MIDI IN connector
This 5-pin DIN is a standard MIDI input connector.
Use this to input MIDI signals.

i USB port
This is a USB Type-C port.
Use a USB cable to connect the unit to a computer or an iOS
device.
ATTENTIONi When using this unit while connected to a computer, it will
receive power from the computer’s USB port. Dependingon the computer, the USB port might not be able to supply
enough power to operate the unit. In this case, connect anduse a dedicated AC adapter.
i When connected to a USB 3.0 port, it will function in High
Speed mode equivalent to USB 2.0 (480 Mbps maximum).
i After waking a computer from suspend (sleep) mode, if theunit does not operate properly, turn it off and turn it on again
or disconnect and reconnect the USB cable.

When connected to an iOS device or other equipment thatcannot power this unit, a dedicated AC adapter (PS-P520E,
DC5V, sold separately) with power supply must be connectedto the DC IN 5V connector. (see “When using an iOS device”
on page 10)
NOTE
When using a US-2x2HR that is connected to a computer
using the included USB cable, it will receive power from thecomputer’s USB port, so a dedicated AC adapter (PS-P520E,
DC5V, sold separately) should not be necessary.
Depending on the computer, however, the USB port might
not be able to supply enough power to operate the unit.
In this case, use a dedicated AC adapter (sold separately).

p DC IN 12V connector (US-4x4HR only)
Under the following conditions, connect the included DC12V
AC adapter (PS-P1220E, DC12V) here. (see “Using with an AC
adapter” on page 10)
i When the USB bus power supply current is insufficienti When connected to an iOS device or other equipment thatcannot power this unit

TASCAM US-2x2HR/US-4x4HR 5

3 – Installation
System requirements

Apple iOS devices

Check the TEAC Global Site (https://teac-global.com/) for thelatest information about supported operating systems.

Supported operating systems

Windows
Supported operating systems
Windows 10 32-bit
Windows 10 64-bit
Windows 8.1 32-bit
Windows 8.1 64-bit
Windows 7*
Windows 7 32-bit SP1 or later
Windows 7 64-bit SP1 or later* Operation has been confirmed with the final version of
Windows 7.

Computer hardware requirements
Windows computer with a USB 2.0 (or higher) port

CPU/processor speed
2 GHz or faster dual core processor (x86)

Memory2 GB or more
ATTENTION
Operation of this unit was confirmed using standard
computers that meet the above requirements. This does notguarantee operation with all computers that meet the above
requirements.
Even computers that meet the same system requirements
might have processing capabilities that differ according totheir settings and other operating conditions.
NOTE
Since noise could occur depending on the computer systemused, we recommend selecting “High performance” for“Plugged in” on the Power Options Control Panel page.

Mac
Supported operating systems
macOS Catalina (10.15 or later)
macOS Mojave (10.14 or later)
macOS High Sierra (10.13 or later)

Computer hardware requirements
Mac with a USB 2.0 (or higher) port

CPU/processor speed
2 GHz or faster dual core processor

Memory2 GB or more

6 TASCAM US-2x2HR/US-4x4HR

iPadOS13
iOS13
iOS12
iOS11

Supported audio drivers
Windows
ASIO2.0, WDM, MIDI

Mac
Core Audio, Core MIDI

iOS divice
Core Audio3 – Installation
Installing the dedicated software
To use this unit, a dedicated software must be installed on acomputer.
The dedicated software might be updated at any time.
Download the latest software for the operating system you areusing from the TEAC Global Site (https://teac-global.com/).

5. Read the contents of the License Agreement, and select“I accept the agreement” if you agree to the terms.
Then, click the “Next” button.

o When you install the dedicated software on a Windows
computer, the Windows driver and the Settings Panelapplication will be installed.
o When you install the dedicated software on a Mac, only the
Mac Settings Panel application will be installed. The standard
OS driver will be used.

6. Next, click the “Install” button.

o With an iOS device, the standard OS driver will be used, so
there is no need to install any. To change unit settings, use
the Settings Panel application installed on a Windows or Mac
computer.
ATTENTION
Before starting to install software, quit other applications.

Installing the Windows dedicatedsoftware
ATTENTION
i Complete installation of the Windows dedicated software on
the computer before connecting the unit to it with the USB
cable.
i If you connected the unit to the computer using the USB
cable before installing the Windows dedicated softwareand the “Found New Hardware Wizard” launched, close theWizard and disconnect the USB cable.

Windows dedicated software installation
procedures

7. Next, click the “Install” button to start installation (Windows
8.1/Windows 7).

8. The following screen appears when installation has
completed.
Click the “Finish” button.

1. Download the latest Windows dedicated software from the
TEAC Global Site (https://teac-global.com/) and save it on
the computer to be used with the unit.

2. Uncompress the saved software (zip file) on the computer
desktop or another location.

3. Double-click the “TASCAM_US-HR_Installer_x.xx.exe”
file in the folder that appears after uncompression toautomatically launch the installation software.

ATTENTION
If you open a zip file without decompressing it anddoubleclick the “TASCAM_US-HR_Installer_x.xx.exe” file in
the folder that opens, installation will not start.
Right-click the zip file and select “Extract All”, for example, todecompress it and then try again.

4. When a “Security Warning” or “User Account Control”
screen appears, click the “Yes” button.

The installer will quit and the Windows Settings Panel will
launch.
NOTE
The first time you connect the unit by USB to the computer
after installing the software, installation of the device driverwill be executed. Some time might be necessary before
the unit is recognized because Windows Update will be
automatically searched at this time.
If the unit is still not recognized after a while, open thesoftware installation screen from the notification area atthe bottom right of the computer display, and click “Skipobtaining driver software from Windows Update” to stop thesearch.

TASCAM US-2x2HR/US-4x4HR 7

3 – Installation
Installing the Mac dedicated software
NOTE
i Install the Mac dedicated software on the computer before
connecting the unit to it with the USB cable.
i Depending on the Gatekeeper setting, a warning message
might appear during installation. Please see “Working with
Gatekeeper” on page 8 for information about Gatekeeper.

5. Click the “Read License” button and check the contentsof the Software License Agreement. If you agree to thecontents of the license, click “Agree”.
Then, click the “Next” button.

Mac dedicated software installation
procedures
1. Download the latest Mac dedicated software for theoperating system you are using from the TEAC Global Site
(https://teac-global.com/) and save it on the computer tobe used with the unit.

6. Next, click the “Install” button to start installation.

2. Double-click “US-HR_Installer_x.xx.dmg”, which is the

saved disk image file for the Mac dedicated software, anddouble-click “US-HR_Installer.pkg” inside the folder that
opens.

7. The following screen appears when installation has
NOTE
Depending on the computer’s settings, the downloaded zip
file might not have been uncompressed automatically. In thiscase, uncompress the zip file first and then double-click thedisk image file.

completed.
Click the “Close” button.

3. When the installer starts, click the “Continue” button.

Working with Gatekeeper

4. Next, select the desired language and click the “Continue”
button.

When using macOS, depending on the Gatekeeper security
function setting, a warning message might appear during
installation.
The solution depends on the warning message shown.
See the following explanations for details.

When the Gatekeeper setting is “Allow
applications downloaded from: the Mac App
Store”
The following security warning might be shown:“‘US-HR_Installer.pkg’ can’t be opened because it was not
downloaded from the Mac App Store.”

In this case, click the “OK” button to close the message. Then,control-click (or right-click) the file and click “Open” in themenu.

8 TASCAM US-2x2HR/US-4x4HR

3 – Installation
When the “‘US-HR_Installer.pkg’ can’t be opened because it
was not downloaded from the Mac App Store. Are you sure
you want to open it?” security warning message appears,
click the “Open” button.

This warning message might also appear when the
Gatekeeper setting is something other than “Allow
applications downloaded from: the Mac App Store”.
The file still might not open and “‘US-HR_Installer.pkg’ can’tbe opened because it was not downloaded from the Mac App
Store.” might appear again.

In this case, copy the file from the folder where it is to thedesktop or another folder, and then open it.
Alternatively, change the Gatekeeper settings to “Allow apps
downloaded from: App Store and identified developers” andtry opening it again.

When the Gatekeeper setting is “Allow
applications downloaded from: the Mac App
Store”“‘US-HR_Installer.pkg’ is an application downloaded fromthe Internet. Are you sure you want to open it?” might appear
as a security warning message. In this case, click the “Open”
button.

Changing the Gatekeeper setting
The Gatekeeper setting can be changed using the “Allow
applications downloaded from:” item on the “General” pageof the “Security & Privacy” pane of the System Preferences.
To change this, you must click the lock icon ( ) at thebottom left and enter a password to unlock the settings.

This setting will lock again when you close the System
Preferences by clicking the button or typing command-Q,
for example, or when you click “Show All” to close the openpane.
ATTENTION
Changing the Gatekeeper settings could result in security
risks.
If you changed the Gatekeeper setting to decrease security(use one of the lower settings), set it back to the original
setting after updating the software and/or firmware. (Wheninstalling a firmware update immediately after software, do
this after installing the firmware update.)

Uninstalling the dedicated software
NOTE
Normally, there is no need to uninstall the dedicatedsoftware.
Follow these procedures if a problem occurs or you no longer
intend to use the unit with the computer.

Uninstalling the Windows dedicatedsoftware
1. Open the “Uninstall or change a program” screen using theprocedures for the operating system being used (Windows
10/Windows 8.1/Windows 7).

2. Select “TASCAM US-HR version x.xx” from the list, anddouble-click it.

3. Then, follow the instructions that appear on the screen.

Uninstalling the Mac dedicated software
Delete “US-HR_Settings Panel” from the Application folder tocomplete uninstallation.

TASCAM US-2x2HR/US-4x4HR 9

4 – Preparation
Connecting the power

US-4x4HR

When using a computer (Windows/Mac)o When the USB bus power supply current is insufficient

Under the following conditions, connect the included DC12V AC
adapter (PS−P1220E, DC12 V) to the DC IN 12V connector.

When this unit is connected to a computer using an included
USB cable, it will operate using USB bus power, so connecting aseparate power supply device is not necessary.
ATTENTION
When operating the US-4x4HR with USB bus power, use acommercially-available Type-C–Type-C cable to connect it toa USB Type-C port on the computer. If there is a problem withthe power supply, the phantom power indicator will blink. In
this case, use the included AC adapter (PS-P1220E, DC12 V).

o When connected to an iOS device or other equipment thatcannot power this unit
Power outlet

TASCAM PS-P1220E (included)

DC plug

NOTE
Depending on the computer, the USB port might not be able
to supply enough power to operate the unit. In this case,connect and use a dedicated AC adapter.

When using an iOS device
When this unit is connected to an iOS device, connecting a
dedicated AC adapter is necessary to supply power to the unit.
Connect the dedicated AC adapter before connecting the USB
cable.

Using with an AC adapter
US-2x2HR
Connect an AC adapter (PS-P520E, DC5V, sold separately) to the
DC IN 5V connector.
TASCAM PS-P520E (sold separately)
Power outlet

DC plug

ATTENTION
We highly recommend using a dedicated AC adapter (PSP520E, DC5 V, sold separately) with the US-2x2HR. Whenusing another external power supply device, use one withthe following specifications.
i Power supply voltage: 5 V
i Power supply current: 700 mA or more
Using a power supply device with specifications other than
the above could cause malfunction, overheating, fire or otherproblems. If trouble should occur, stop using the unit andcontact the retailer where you purchased it or a TEAC service
center to request repair.

10 TASCAM US-2x2HR/US-4x4HR

ATTENTION
Always use the dedicated AC adapter (PS-P1220E, DC12 V)
that was shipped with the unit. Using a different AC adapter
could cause malfunction, overheating, fire or other problems.
NOTE
The included dedicated AC adapter (PS-P1220E, DC12 V)
is shipped with 4 types of outlet plugs. Attach the type ofplug that matches the power outlet that you are using. (see“Changing the outlet plug (US-4x4HR only)” on page 11)4 – Preparation
Changing the outlet plug (US-4x4HR only)

Connecting other equipment

NOTE
When the US-4x4HR is purchased new, the included AC
adapter (PS-P1220E, DC12V) has an outlet plug (A) alreadyattached. There should be no need to change the plug.

This is an example of US-4x4HR connections.

1. Move the knob (1) on the PS-P1220E AC adapter in theo Before making connections, turn this unit and all equipment
to be connected off (standby).

direction of the arrow and remove the plug (A).

Precautions before making connectionso Carefully read the operation manuals of the devices to beconnected and then connect them correctly.

o Install all connected devices, including this unit, so that they
are powered from the same line. When using a power strip
or similar device, be sure to use one that has high current
capacity (thick cable) in order to minimize fluctuations in
power voltage.
GuitarBass

2. Move the knob (1) in the direction of the arrow again, andattach the included outlet plug (B) to the AC adapter.

Mic

This completes changing the outlet plug.
After changing the outlet plug, confirm that it is not loose or
crooked and that everything is normal before plugging it into an
outlet.

Headphones

ATTENTION
Do not use the adapter if there is anything abnormal about
the plug after changing it. Use when the plug is abnormal
could cause fire or electric shock. Contact the retailer where
you purchased the unit or a TEAC service center (on the backcover) to request repair.

Powered speakers

Sequencer/
rhythm machine

Computer

Examples of connections to a US-4x4HR

TASCAM US-2x2HR/US-4x4HR 11

4 – Preparation
Connecting with a computer
Use the included USB cable to connect the unit to a computer
USB port compatible with 2.0, 3.0 or higher USB specifications.
When the USB connection is working, the USB indicator on thefront of the unit lights.
ATTENTIONi When operating the US-4x4HR with USB bus power, use acommercially-available Type-C–Type-C cable to connect it toa USB Type-C port on the computer. If there is a problem withthe power supply, the phantom power indicator will blink. In
this case, use the included AC adapter (PS-P1220E, DC12 V).
(see “Using with an AC adapter” on page 10)
i If you connect this unit to a computer via a USB hub, forexample, bus power could be insufficient, and audio signal
dropouts, clicking noises and other interference could occur
due to the influence of other USB devices connected to thathub. For this reason, we strongly recommend connecting thisunit to a separate USB port. Connecting USB keyboards andmice, however, to the same bus should not be a problem.

Connecting with iOS devices
To connect with an iOS device that has a Lightning connector
use a Lightning to USB Camera Adapter* and the USB cableincluded with this product.
To connect with an iOS device that has a USB Type-C connector,
use a commercially-available Type-C–Type-C cable.
* You must obtain a genuine Apple Lightning to USB Camera
Adapter separately.
NOTE
i When connected, this unit will not provide power to the iOS
device.
i To change unit settings, use the Settings Panel application
installed on a Windows or Mac computer before connecting
to the device.

Audio connections
Analog audio signals input into this device from mics, guitars,
keyboards and other audio equipment can be converted into
digital signals and transmitted to the computer via USB. In
addition, by connecting speakers (through an amplifier if not
powered) or headphones to this unit, you can monitor audio
signals that are input to this unit and output from the computer.
VCAUTION
Before connecting audio equipment, set the GAIN, LINE OUT
and PHONES knobs to their lowest values. Failure to do so
could cause sudden loud noises from monitoring equipment,
and this could damage the equipment or harm hearing.

Connecting microphones
Dynamic mics
Connect these to the IN1/IN2 (and IN3/IN4 on US-4x4HR)
input jacks on the front of the unit.
Condenser mics
When using condenser mics that require phantom power,
connect them to the IN1/IN2 (and IN3/IN4 on US-4x4HR)
jacks , and set the phantom power switch to +48V.
When the phantom power switch is set to +48V, thephantom power indicator on the front of the unit lights.
VCAUTION
Lower the LINE OUT and PHONES knobs before changing thephantom power switch between +48V and OFF. Dependingon the connected mics, sudden loud noises from monitoring
equipment could occur, and this could damage theequipment or harm hearing.
ATTENTIONi Before connecting condenser mics, turn this unit and all
equipment to be connected off (standby).
i The phantom power switch changes the setting for all input
channels simultaneously (2 inputs on US-2x2HR and 4 inputs
on US-4x4HR). Do not set the phantom power switch to+48V when connecting a mic that does not require phantom
power.
i Do not connect or disconnect mics while the phantom powerswitch is set to +48V. Doing so could cause a loud noise andmight damage this unit and connected equipment.
i Set the phantom power switch to +48V only when using
a condenser microphone that requires phantom power.
Setting phantom power to +48V when a dynamic mic orother equipment that does not require it is connected could
damage this unit and the connected equipment.
i When using condenser mics that require phantom powerand dynamic mics together, be sure to use balanced dynamic
mics. Unbalanced dynamic mics cannot be used whenphantom power is enabled.
i Supplying phantom power to some ribbon mics could breakthem. If you are unsure, do not supply phantom power to aribbon mic.
i If you connect this unit to a laptop computer that is runningon battery power and set the phantom power switch to+48V, the computer battery charge will be consumed more
quickly.

Connecting guitars
When connecting a guitar or bass directly to this unit, use theIN1 or IN2 jack on the front of the unit and set the MIC/LINE INST
switch for that jack to INST.

Connecting electronic instruments and otheraudio equipment
When connecting an electronic instrument or other audio
equipment directly to this unit, use the IN1 and IN2 jacks on thefront of the unit and set their MIC/LINE INST switches to MIC/
LINE.

12 TASCAM US-2x2HR/US-4x4HR

4 – Preparation
Connecting analog record players
The output of an analog record player cannot be connected
directly to this unit. To connect an analog record player to thisunit, a phono amp and equalizer (or an audio amplifier that hasphono input jacks) must be connected between them.

Connecting monitor speakers
Connect monitor speakers (powered speakers or an amplifierand speaker system) to the LINE OUT (BALANCED) 1-2 jacks on
the back of the unit.
Use the LINE OUT knob on the front of the unit to adjust the
speaker volume.

Connecting headphones

Using direct monitoring
When the Settings Panel LINE OUT 1-2 or LINE OUT 3-4 setting
is Monitor Mix, the MONITOR BALANCE knob and input
monitoring without delay (direct monitoring) are enabled.
Use the MONITOR BALANCE knob to adjust the monitoringbalance between the signals from this unit’s input jacks and theoutput signals from the computer.
NOTE
i This setting adjusts the monitoring balance. It does not affectrecording levels.
i When using this function, confirm that the input is not set
as an output (monitoring on, for example) in the DAW or
other recording software. Input signals could be added tocomputer output signals, resulting in the doubling of sounds.

Connect headphones to the PHONES jack (standard stereo) on
the front of the unit.
VCAUTION
Before connecting headphones, minimize the volume with
the PHONES knob. Failure to do so could result in a sudden
loud noise that could harm hearing, for example.
NOTE
The same signals are output from both theof the US-4x4HR.

and

jacks

MIDI connections
Connect sound modules, keyboards, synthesizers, drum
machines and other MIDI devices to the unit in the following
manner.
o If you want to monitor sound from a MIDI device, connect its
audio outputs to the IN1/IN2 (or IN3/IN4 on US-4x4HR) jacks
on the front of the unit or use an external mixer.
o You can also use the MIDI IN and OUT connectors on theback of the unit to send and receive MIDI timecode (MTC). By
doing this, you can use an application that supports MTC tosynchronize a multitrack recorder (MTR) and MIDI devices.
ATTENTION
i The USB indicator might stay lit even after the connectedcomputer is shut down. This is because some computers
continue to provide power through USB cables even after
being shut down.
i When using an audio application, if the “MIDI music playback(default device)” is set to “Microsoft GS Wavetable SW Synth”
in the Sound and Audio Devices Properties Control Panel,
MIDI performances can be heard through this unit’s LINE OUT(BALANCED) 1-2 (and 3-4 on US-4x4HR) as well as PHONES
jacks.

TASCAM US-2x2HR/US-4x4HR 13

5 – Using the Settings Panel
Opening the Settings Panel
You can use the Settings Panel to make settings for the various
functions of the unit.
Open the Settings Panel in the following manner.

1 IN 1-2/IN 3-4 buttons
Set the monitoring signal for the IN1/IN2 (or US-4x4HR IN3/
IN4) jacks to Mono or Stereo.
The selectedorbutton appears lit.
ButtonThe signals output from the channels set for the
Monitor Mix will be mono.
Signals sent from the computer depend on the
Loopback setting.
The signals output from the channels set for the
Monitor Mix will be stereo.
Signals sent from the computer depend on the
Loopback setting.

NOTE
i The unit will operate using the setting values set in the
Windows or Mac Settings Panel.
i The Settings Panel cannot be used with an iPad or other iOS
device.
i To change unit settings, use the Settings Panel application
installed on a Windows or Mac computer.

Windows

Meaning

2 Audio Input ON switcheso From the “Start” menu select “US_HR Settings Panel” under“TASCAM”.

Turn input on/off for each channel separately.
When on, theswitches will appear lit and signals will be
input on those channels.

3 LINE OUT 1-2

Maco On the Launchpad, click “US-HR_SettingsPanel”.
o Using the Finder, open the Applications folder and click “USHR_SettingsPanel” to open the Settings Panel.

Settings Panel overview

Windows Settings Panel

Mac Settings Panel

14 TASCAM US-2x2HR/US-4x4HR

Select the signals output from the unit’s LINE OUT(BALANCED) 1-2 jacks and PHONES (andon US4x4HR) jacks.
Options

Meaning

The signals from the channels selectedusing the Audio Input ON switches andMonitor Mix
the signals sent from the computer
by USB are mixed using the MONITORBALANCE knob and output.
Only the Computer Out 1-2 signals sent
Computer Out 1-2
from the computer by USB are output.
Computer Out 3-4 Only the Computer Out 3-4 signals sent
(US-4x4HR only) from the computer by USB are output.
NOTE
i Selecting Monitor mix enables the MONITOR BALANCE knobon the front of the unit and input monitoring without delay(direct monitoring). (see “Using direct monitoring” on page13)
i Set the MONITOR BALANCE knob all the way to the left
(INPUT) to monitor only the input channel signals and set it
all the way to the right (COMPUTER) to monitor only signals
output from the computer. At other positions, both signals
will be mixed.

5 – Using the Settings Panel
4 LINE OUT 3-4 (US-4x4HR only)

6 Information display area

Select the signals output from the unit’s LINE OUT(BALANCED) 3-4 jacks.

This shows the current status of the unit.

Options

Item displayed

Meaning

Sample Rate

This shows the sampling frequency.

DeviceThis is the name of the connected unit.
(“No Device” is shown when no device
is connected.)

Meaning

The signals from the channels selectedusing the Audio Input ON switches andMonitor Mix
the signals sent from the computer
by USB are mixed using the MONITORBALANCE knob and output.
Only the Computer Out 1-2 signals sent
Computer Out 1-2
from the computer by USB are output.
Computer Out 3-4 Only the Computer Out 3-4 signals sent
(US-4x4HR only) from the computer by USB are output.
NOTE
i Selecting Monitor mix enables the MONITOR BALANCE knobon the front of the unit and input monitoring without delay(direct monitoring). (see “Using direct monitoring” on page13)
i Set the MONITOR BALANCE knob all the way to the left
(INPUT) to monitor only the input channel signals and set it
all the way to the right (COMPUTER) to monitor only signals
output from the computer. At other positions, both signals
will be mixed.

5 Buffer Size (Windows only)
You can adjust the size of the buffer used to handle theaudio input and output signals transferred to and from thecomputer.
Smaller buffer sizes result in less audio signal delay (latency),
but require high-speed processing by the computer.
If the processing cannot keep up, for example, due to othersystem operations, clicking and popping noises might occur
and the audio signal might even drop out.
Increasing the buffer size will stabilize operation andsuppress negative effects on audio signals, but the delay inaudio signals sent to the computer will increase.
You can adjust the buffer size used with this unit according to
your use conditions.
Options
4 Samples, 8 Samples, 16 Samples,
24 Samples, 32 Samples, 64 Samples,
128 Samples, 256 Samples (default), 512 Samples,
1024 Samples, 2048 Samples

7 Loopback
Use to turn the loopback function on or off. When off, theInput, Output and BROADCAST Volume settings are notapplied.
Options: OFF (default), ON
ATTENTION
If using an application in which only one channel is input
even though Loopback is set to “Stereo” (stereo input is notsupported), “Mono” Loopback must be used. In this case, setboth Input and Output to “Mono”.

8 Input
Use to set whether the input signal from the IN1/IN2 jackis converted to mono or kept as stereo when used as aloopback signal.
Options: Mono, Stereo (default)

9 Output
Use to set whether signals are converted to mono or kept asstereo when looping back USB output.
Options: Mono, Stereo (default)

0 BROADCAST Volume slider
Use to adjust the playback volume of Sound Recorder andkaraoke apps. Use this also to adjust the transmitted volume
with live broadcast apps.
NOTE
When adjusting the BROADCAST Volume, turn the
MONITOR BALANCE knob on the unit all the way to the right(COMPUTER).

q Auto Power Save ON switch
Turn this on to enable the automatic power saving function.
When this setting is on, if operating in standalone modeand no input signal (above −60 dBFS) has been detected
for 30 minutes, the unit will turn itself off (start standby)
automatically.

TASCAM US-2x2HR/US-4x4HR 15

5 – Using the Settings Panel
Notification function
If the computer you are using is connected to the Internet,
notifications might appear when the Settings Panel is launched.
NOTE
Put a check in the “Do not show the same message again”
checkbox to prevent the same message from being shown
the next time it is launched.

Automatic software and firmware
update function
If the computer you are using is connected to the Internet,
when a new version of the software or the firmware is released,a notification about automatic updating will appear when thesoftware is launched.

Checking software and firmware
versions
Select About from the Help menu to open the following screen.
The software and firmware versions can be checked here.

Software update notification

Firmware update notification
Item displayed

Meaning

Firmware Ver.

This is the firmware version used by theconnected unit.

Software Ver.

This is the software version.

Click the “Update now” button to use the latest version of thesoftware or firmware.
The file will be downloaded automatically in the update
software will launch.
Click the “Update later” button to close the update window if
you do not want to update or want to update later.
NOTE
i Put a check in the “Do not show the same message again”
checkbox to prevent the same message from being shown
the next time it is launched.
i After closing the update window, you can reopen it byselecting “Update” from the “Help” menu.

16 TASCAM US-2x2HR/US-4x4HR

6 – Application Guide
In this chapter, we explain how to set some audio applications
for use with this unit.

DAW software
Bundled DAW software
Download quickstart guides for the bundled DAW software fromthe TEAC Global Site (https://teac-global.com/), and refer tothem for instructions about downloading, installing and making
settings in these applications.

Other DAW software
When using any other DAW software, consult its operation
manual.
When using a DAW that supports ASIO, select “US-HR Series
ASIO”.

Windows

macOS
1. Open the “Utilities” folder in the “Applications” folder, anddouble-click “Audio MIDI Setup”. Then open the “Audio
Devices” window.

2. Click “US-2x2 HR” or “US-4x4 HR” to select it. Then, whileright-clicking or control-clicking it, click “Use this device forsound output” in the pop-up menu that appears.
The speaker mark moves next to “US-2x2 HR” or “US-4x4
HR”.

NOTE
To use this device as the recording device, set “US-2x2 HR” or“US-4x4 HR” to “Use this device for sound input”.

3. Launch an audio application, select an audio file and start
playback.

NOTE
i Do not change the sampling frequency when an audio
application is playing back.
i If there is no need to change the sampling frequency, input/
output device settings can also be made in the Sound paneof the System Preferences.

1. Open the “Sound” screen using the procedures for theoperating system being used (Windows 10/Windows 8.1/
Windows 7).

2. On the “Playback” page, right-click “US-2x2 HR” or “US-4x4HR”, and click “Set as Default Device” in the pop-up menu
that appears.
When you do this, the green check mark appears next tothe selected device.

NOTE
To use the unit as a recording device, set the default device
according to the device being used on the “Recording” tab in
the same manner as on the “Playback” tab.

3. After completing the setting, click the “OK” button.
4. Start an audio application, select an audio file and begin
playback.

NOTE
i If you change the setting while an audio application isrunning, the software will not recognize that the device has
been changed. In this case, restart the application.
i If you still cannot hear sound after making the settings andcompleting the procedures above, restart the computer.
i If you make this setting, sound will be output through thisunit, but no sound will be output from the computer’s
speakers or headphone jack.

iOS
When using this unit with an iOS device, no special settings arenecessary. You can use the unit immediately after connecting itto the device by USB.
NOTE
i Connecting headphones or other equipment to theheadphone jack of the iOS device will interrupt USB
communication with the unit.
i The unit will operate with the factory default settings or
the settings as have been changed using a Windows/Mac
computer.

Factory default settings for the unito Direct Monitor Settings: Monoo Audio Input: ONo LINE OUT 1-2: Monitor Mix
o LINE OUT 3-4: Computer Out 3-4 (US-4x4HR only)
o Loopback: OFFo Auto Power Save: ON

TASCAM US-2x2HR/US-4x4HR 17

7 – Standalone Mode
Overviewo This unit will operate in standalone mode when it is turnedon if it is not connected to a computer or iOS device by USB.
o You can use this unit as a mic preamp and to monitor input
signals. This function is convenient when you want topractice an instrument without recording, for example.
o An external power supply device is necessary. See“Connecting the power” on page 10 for details.

Settings in standalone mode
When operating in standalone mode, input signals pass-throughthe built-in digital mixer and output selector, which are set atfixed values, and are output from the output jacks. In addition,
when operating in standalone mode, the USB indicator will
blink.

Settings Panel settings
The current (most recently made) settings are retained for thefollowing items on the Settings Panel.
o Direct Monitor Settings IN 1-2
o Direct Monitor Settings IN 3-4 (US-4x4HR only)o Auto Power Save
LINE OUT 1-2 and LINE OUT 3-4 (US-4x4HR only) settings are
fixed to “Monitor Mix”.

18 TASCAM US-2x2HR/US-4x4HR

8 – MIDI Implementation Chart
MIDI Implementation Chart
FunctionTransmit

Recognize

When power on——

Settable——

When power on——

Messages

—

—

Thru

Altered....................

Range

—

—

Thru

Note on——Note off——

Polyphonic——

Channel——Pitch bend

—

—

Thru

Control change

—

—

Thru

—

—

Basic channels

Mode
Note number
Velocity
Aftertouch

Program change

Setting range

System exclusive
System common

System real-time

Other....................
——

Position——Song select

—

—

Tune

—

—

Clock

—

—

Command——

Local on/off——

All notes off——

Active sense

—

—

Reset

—

—

Remarks
Thru

Thru
Thru

Thru
Thru
Thru

Thru

Thru

Notes
Mode 1: OMNI ON, POLY		
Mode 3: OMNI OFF, POLY		

Mode 2: OMNI ON, MONO 		
Mode 4: OMNI OFF, MONO 		–: YES—: NO

TASCAM US-2x2HR/US-4x4HR 19

9 – Troubleshooting
Please read this chapter if you are unable to use the unit
properly even after setting it following the procedures in thismanual.
If you are still unable to resolve your problems please contact
TASCAM customer support with the following information
about the operating environment and details about the trouble.

Operating environmento Computer manufacturer:o Model:o CPU:o Memory (RAM):o Operating system:o Applications used:o Antivirus software:o Wireless LAN use:
If these measures do not resolve the issue, please contact theretailer where you purchased this unit or a TEAC service center.
See the end of this document for contact information.

The dedicated software cannot be installed
1. Check the operating system
The operating system being used might not be compatible
with the software that you are trying to install. Check thecompatible operating system of the software you are trying
to install again.

2. Stop software running in the background
Antivirus software and other software that runs in the
background can prevent installation. Quit software thatruns in the background and try installation again.

The unit is connected, but the computer does
not recognize it
1. Install the dedicated software
i If you have not done so, install the dedicated software.
See “Installing the dedicated software” on page 7 fordetails.

2. Change the USB port
i This unit cannot be used with USB 1.1. Use a port that
supports at least USB 2.0 or USB 3.0.
i Do not use a USB hub with this unit. Always connect theunit directly to a USB port on the computer.
i If the above methods do not resolve the problem, connect
the unit to a different USB port on the computer.

20 TASCAM US-2x2HR/US-4x4HR

There is no sound even when playing back on
the computer
Confirm that the MONITOR BALANCE knob on the unit is notturned all the way to the left (toward INPUT). If that is the case,turn the MONITOR BALANCE knob to the right of center (toward
COMPUTER).
In addition, check the status of the unit’s connection with thecomputer.
Moreover, if you make the following settings, sound will be
output through this unit, but no sound will be output by thecomputer’s speakers or headphone jack.
Windows
See the “Windows” section of “6 – Application Guide” on page
17 in this manual, and make settings as necessary for the OS.
Mac

1. Quit all applications and open “System Preferences…” fromthe Apple menu.

2. Open “Sound”.
3. On the “Output” tab, select “US-2x2 HR” or “US-4x4 HR”.
After completing the setting, restart the computer and checkthe sound of playback.
Depending on the application that you are using, you mightneed to make additional device settings.
In particular, DAW software operate using audio engines withsettings that are different from the OS settings, so confirm the
DAW settings first after installing the driver and Settings Panelsoftware for this unit.
Please see the manuals for the applications that you are using
for detailed setting procedures.

The input sound has too much latency whenmonitoring
Use the direct monitoring function. (see “Using direct
monitoring” on page 13)

The input sound can be heard doubled
Confirm that the input is not set as an output (monitoring on,
for example) in the DAW or other recording software.
An input signal from an input jack could sound doubled
because along with direct monitoring it is also being monitored
as an output signal from the computer.

9 – Troubleshooting
Sound breaks up or there is noise
The processing load on the computer causes sound to break up
and noise to occur.
Here are some methods to reduce the load on the computer.

1. A wireless LAN and software running in the background,including antivirus software, regularly put processing loads
on the computer, which can cause sound to break up andother noise.
Stop wireless LAN transmission, antivirus software andother software running in the background when using thisunit.

2. Set the buffer size (latency) in the audio application thatyou are using or in this unit’s Settings Panel to a larger value(Windows only).

NOTE
Consult the maker of the audio application that you are using
for methods to reduce its load on your computer.

3. Change the settings of your computer so that they are
optimal for audio processing.

Using Windowsi Performance Options
1 Open the Control Panel using the appropriate method
for the OS you are using (Windows 10/Windows 8.1/
Windows 7).
i In Windows 10, open the “Control Panel”. Then, click
the “System” icon.
i In Windows 8.1, right-click the ordinary Start screen(Metro user interface screen) and then click “Allapps”. Then, right-click “Computer” and select“Properties”.
i In Windows 7, right-click “Computer” from theWindows Start button, and select “Properties”.
2 Click “Advanced system settings”.
3 Click “Settings” in the “Performance” section of the“Advanced” tab of the “System Properties”window.
4 In the “Visual Effects” tab of the “Performance Options”
window, select “Adjust for best performance”.
i Power Options
1 Open the Control Panel using the appropriate method
for the OS you are using (Windows 10/Windows 8.1/
Windows 7).
2 Click “Hardware and Sound”.
3 Click “Power Options”.
4 Click on “Create a power plan” and select “High
Performance”.

4. Connect to a different USB port.
Since the unit might not properly function with some USB
ports, try connecting it to a different USB port.
NOTE
i Try again after disconnecting other USB devices (Keyboards
and mice can be left connected).
i Do not use a USB hub. Always connect the unit directly to a
USB port on the computer (built-in).

I see that the US-2x2HR or US-4x4HR
recommends that I change the Windows
Power Management settings. How do I do
this?
Windows allows the processor to throttle to half speed when
the computer is idle. However, this can affect the performanceof DAW recording software. TASCAM recommends that thisfunction be disabled, especially when using a multi-channelinterface such as the US-4x4HR.
To Change the Power Management settings in Windows:

1. Open the Control Panel using the appropriate method for

the OS you are using (Windows 10/Windows 8.1/Windows
7).

2. Click “Hardware and Sound”.
3. Click “Power Options”.
4. Select “High Performance” from the “Power Options”.
NOTE
If an item is not shown, select the “Show Additional Plans”
downward triangular button. Alternatively, click “Create apower plan”.

Support for bundled software, including
DAW software
TASCAM does not provide end-user support for the bundledDAW Software.
Please check the Help menu of the installed software to findwhere this support is available.

NOTE
If an item is not shown, select the “Show Additional Plans”
downward triangular button. Alternatively, click “Create apower plan”.
Using Mac
1 Open “System Preferences…” from the Apple menu,
and select “Energy Saver”.
2 Set “Computer sleep” to “Never”.
3 Set “Display sleep” to “Never”.
NOTE
Depending on the macOS version and Mac computer model,
this setting might not be available.

TASCAM US-2x2HR/US-4x4HR 21

10 – Specifications
GeneralSampling frequencies
44.1, 48, 88.2, 96, 176.4, 192 kHz

Quantization bit depth
24-bitHeadphone output (PHONES)
Connectors: 6.3mm (1/4”) standard stereo jack
Maximum output
US-2x2HR: 18 mW + 18 mW or higher
US-4x4HR: 45 mW + 45 mW or higher(THD+N 0.1% or less, into 32 Ω load)

Control input/output ratings

Input/output ratings

MIDI IN connector

Analog inputs

MIDI OUT connector

Mic inputs (balanced)
US-2x2HR: IN1/IN2
US-4x4HR: IN1/IN2, IN3/IN4Connectors: XLR-3-31 equivalent (1: GND, 2: HOT, 3: COLD)
Maximum input level: +9 dBu (2.183 Vrms)
Rated input level: −7 dBu (0.346 Vrms)
Gain range: 56 dB
Input impedance: 2.2 kΩ

Instrument inputs (unbalanced)
US-2x2HR: IN1/IN2
US-4x4HR: IN1/IN2(MIC/LINE INST switch set to INST)
Connectors: 6.3mm (1/4”) standard TS jacks(Tip: HOT, Sleeve: GND)
Maximum input level: +10 dBV (3.162 Vrms)
Rated input level: −6 dBV (0.501 Vrms)
Gain range: 56 dB
Input impedance: 1 MΩ or moreLine inputs (balanced)
US-2x2HR: IN1/IN2
US-4x4HR: IN1/IN2, IN3/IN4(MIC/LINE INST switch set to MIC/LINE)
Connectors: 6.3mm (1/4”) standard TRS jack(Tip: HOT, Ring: COLD, Sleeve: GND)
Maximum input level: +20 dBu (7.746 Vrms)
Rated input level: +4 dBu (1.228 Vrms)
Gain range: 56 dB
Input impedance: 10 kΩ

Analog outputs
Line Outputs (balanced)
US-2x2HR: LINE OUT (BALANCED) 1-2
US-4x4HR: L INE OUT (BALANCED) 1-2
LINE OUT (BALANCED) 3-4
Connectors: 6.3mm (1/4”) standard TRS jacks(Tip: HOT, Ring: COLD, Sleeve: GND)
Maximum output level: +20 dBu (7.746 Vrms)
Rated output level: +4 dBu (1.228 Vrms)
Output impedance: 210 ΩConnector: 5-pin DIN
Format: standard MIDI
Connector: 5-pin DIN
Format: standard MIDI

USB
Connector: 4-pin USB Type-C
Transfer rate: USB 2.0 High Speed (480 Mbps)

Audio performance
Mic amp EIN (equivalent input noise)−128 dBu or lessFrequency response
MIC/LINE IN
At 44.1/48 kHz, 20 Hz – 20 kHz: +0 dB/−0.4 dB (JEITA)
At 88.2/96 kHz, 20 Hz – 40 kHz: +0 dB/−0.4 dB (JEITA)
LINE OUT
At 44.1/48 kHz, 20 Hz – 20 kHz: +0.2 dB/−0.1 dB (JEITA)
At 88.2/96 kHz, 20 Hz – 40 kHz: +0.2 dB/−0.4 dB (JEITA)

S/N ratio
110 dB(MIC IN, GAIN knob at minimum, 20 kHz SPCL LPF +A-Weight)
108 dB(LINE IN, GAIN knob at minimum, 20 kHz SPCL LPF +A-Weight)
110dB(LINE OUT, LINE OUT knob at maximum, 20 kHz SPCL LPF+ A-Weight)

THD + N
0.0013%(MIC IN, 1 kHz sine wave, −5 dBFS input, GAIN knob at
minimum, 20 kHz SPCL LPF)
0.0011%(LINE IN, 1 kHz sine wave, −5 dBFS input, GAIN knob at
minimum, 20 kHz SPCL LPF)
0.0012%(LINE OUT, 1 kHz sine wave, −4 dBFS input, LINE OUT knob
at maximum, 20 kHz SPCL LPF)

Crosstalk
95 dB or more (MIC/LINE IN to LINE OUT, 1 kHz sine wave,
GAIN knob at minimum)

22 TASCAM US-2x2HR/US-4x4HR

10 – Specifications
Computer system requirements
Check the TEAC Global Site (https://teac-global.com/) for thelatest information about supported operating systems.

Windows
Supported operating systems
Windows 10 32-bit
Windows 10 64-bit
Windows 8.1 32-bit
Windows 8.1 64-bit
Windows 7*
Windows 7 32-bit SP1 or later
Windows 7 64-bit SP1 or later* Operation has been confirmed with the final version of
Windows 7.

Computer hardware requirements
Windows computer with a USB 2.0 (or higher) port

CPU/processor speed
2 GHz or faster dual core processor (x86)

Memory2 GB or more
ATTENTION
Operation of this unit was confirmed using standard
computers that meet the above requirements. This does notguarantee operation with all computers that meet the above
requirements. Even computers that meet the same system
requirements might have processing capabilities that differ
according to their settings and other operating conditions

Mac
Supported operating systems
macOS Catalina (10.15 or later)
macOS Mojave (10.14 or later)
macOS High Sierra (10.13 or later)

Computer hardware requirements
Mac with a USB 2.0 (or higher) port

CPU/processor speed
2 GHz or faster dual core processor

Memory2 GB or more

iOS device
Operation has been confirmed with Apple devices running thefollowing iOS versions.
iPadOS13
iOS13
iOS12
iOS11
ATTENTION
To connect an iOS device that has a Lightning connector,
a genuine Apple Lightning to USB Camera Adapter (soldseparately) is necessary.

Supported audio drivers
Windows
ASIO2.0, WDM, MIDI

Mac
Core Audio, Core MIDI

iOS divice
Core Audio

Other
Power
Used with a computer
USB bus power or connected to the dedicated AC adapter
below
Used with an iOS device
Connected to the dedicated AC adapter below
US-2x2HR: Dedicated AC adapter (TASCAM PS-P520E,
DC 5 V)
US-4x4HR: Dedicated AC adapter (TASCAM PS-P1220E,
DC 12 V)Power consumption
US-2x2HR: 1.75 W
US-4x4HR: 2.25 W

External dimensions
US-2x2HR: 186 × 65 × 160 mm(W x H x D, including protrusions)US-4x4HR: 296 × 65 × 160 mm(W x H x D, including protrusions)

WeightUS-2x2HR: 1.1 kg
US-4x4HR: 1.6 kg

Operating temperature range
5–35 °C (41 - 95°F)

TASCAM US-2x2HR/US-4x4HR 23

10 – Specifications
Dimensional drawings

160

US-2x2HR

186

65

160

US-4x4HR296

65

o Illustrations in this reference manual might differ in part fromthe actual product.
o Specifications and external appearance might be changed
without notification to improve the product.

24 TASCAM US-2x2HR/US-4x4HR

10 – Specifications
Block diagram
MIC/LINE/INST
IN1

48V

SIG/PEAK

GAIN

Audio Input ON

Loop back

ADC
SIG/PEAK
MIC/LINE/INSTIN2

MIC/LINE
IN3

48V

48V

Audio Input ON
GAIN

SIG/PEAK

GAIN

Audio Input ON

ADC
SIG/PEAK
MIC/LINE
IN448V

Audio Input ON
GAIN

USB
Direct Monitor
LR

only US-4ｘ４HR

Monitor Balance

Loop backL
R
BroadcastIN 1-2Input
IN 3-4
PHONES1

PHONES1

OutputPHONES2

LINE OUT 1

PHONES2

LINE OUT 1-2

LINE OUT 1-2

Computer Out 1
LINE OUT 2

DAC
Computer Out 2
LINE OUT 3-4

LINE OUT 3

Computer Out 3
LINE OUT 4

DAC
Computer Out 4

only US-4ｘ４HR

TASCAM US-2x2HR/US-4x4HR 25

TEAC CORPORATION

https://tascam.jp/jp/

Phone: +81-42-356-9143
1-47 Ochiai, Tama-shi, Tokyo 206-8530 JapanTEAC AMERICA, INC.

https://tascam.com/us/

Phone: +1-323-726-0303
10410 Pioneer Blvd. Suite #1 Santa Fe Springs, California 90670, U.S.A.

TEAC UK Ltd.

https://www.tascam.eu/en/

Phone: +44-1923-797205
Luminous House, 300 South Row, Milton Keynes, Buckinghamshire, MK9 2FR, UK

TEAC EUROPE GmbHhttps://www.tascam.en/de/

Phone: +49-611-71580
Bahnstrasse 12, 65205 Wiesbaden-Erbenheim, Germany

TEAC SALES & TRADING(SHENZHEN) CO., LTD

https://tascam.cn/cn/
Phone: +86-755-88311561~2
Room 817, Xinian Center A, Tairan Nine Road West, Shennan Road, Futian District, Shenzhen, Guangdong Province 518040, China

0121. MA-3170B