D-2T

User Guide

D/A Converter

D-2NOS

INV

POWER

LPF

FIR

OSF

SYNC

12

LOCK RANGE

D/A CONVERTERMHzKHzUSB

DISPLAY OFF

123INPUT

4EXT

Table of Contents
Safety Precautions................................................................................................3
Front Panel Names and Functions.......................................................................6
Rear Panel Names and Functions........................................................................8
USB Connection with a Computer......................................................................10
Balanced Input/Output........................................................................................10
Attaching the Spike Pins.....................................................................................10
Troubleshooting.................................................................................................. 11
Maintenance....................................................................................................... 11Specifications...................................................................................................... 11Supplied Accessories• User Guide (this manual)........................... 1• Power cable............................................... 1• Spike pin.................................................... 3• Wrench (Spanner)...................................... 1• The official name of Windows® is Microsoft® Windows® Operating System.
• Windows® 10, Windows® 8.1, Windows® 8, and Windows® 7 are either registered trademarks or trademarksof Microsoft Corporation in the United States.
• Apple, Mac, Mac OS, and OS X are either registered trademarks or trademarks of Apple Inc.
• Android is a trademark of Google LLC.
• All other names of systems, products, and services are trademarks of their respective owners.
• In the manual, the ™ or ® marks are not specified.

2

Safety Precautions

CAUTIONRISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICEPERSONNEL.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert
the user to the presence of uninsulated “dangerous voltage” within the product’s enclosurethat may be of sufﬁcient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to thepresence of important operating and maintenance (servicing) instructions in the literatureaccompanying the product.

WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO
RAIN OR MOISTURE.

3

IMPORTANT SAFETY INSTRUCTIONSREAD BEFORE OPERATING EQUIPMENTThis product was designed and manufactured to meet strict quality and safety standards.
There are, however, some installation and operation precautions which you should be particularly aware of.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings.
Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (includingamplifiers) that produce heat.
9. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and thepoint where they exit from the apparatus.
10. Only use attachments/accessories specified by the manufacturer.
11. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, orsold with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
14. Batteries shall not be exposed to excessive heat such as sunshine, fire or the like.

CAUTION:•To completely disconnect this product from the mains, disconnect the plug from the wall socket outlet.
The mains plug is used to completely interrupt the power supply to the unit and must be within easy
access by the user.

•Never use the unit with any other cord except the supplied power cord.

NOTE ON USE
WARNINGS• Avoid high temperatures.
Allow for sufficient heat dispersion when installed in a rack.
• Handle the power cord carefully.
Hold the plug when unplugging the cord.
• Keep the unit free from moisture, water, and dust.
• Unplug the power cord when not using the unit for long periods of time.
• Do not obstruct the ventilation holes.
• Do not let foreign objects into the unit.
• Do not let insecticides, benzene, and thinner come in contact with the unit.
• Never disassemble or modify the unit in any way.
• Ventilation should not be impeded by covering the ventilation openings with items, such as newspapers, tablecloths or curtains.
• Naked flame sources such as lighted candles should not be placed on the unit.
• Observe and follow local regulations regarding battery disposal.
• Do not expose the unit to dripping or splashing fluids.
• Do not place objects filled with liquids, such as vases, on the unit.
• Do not handle the mains cord with wet hands.
• When the switch is in the OFF position, the equipment is not completely switched off from MAINS.
• The equipment shall be installed near the power supply so that the power supply is easily accessible.

4CAUTIONS ON INSTALLATION

*
*

*

*

WallWandParoiParete* For proper heat dispersal, do not install this unit in a confined space, such as a bookcase orsimilar enclosure.
• Leave sufficient clearance (at least 10 cm) from the wall, (at least 5 cm) from top surface of the unit.
• Do not place any other equipment on this unit.

5Front Panel Names and Functions②④ ⑥ ⑧
D-2NOS

INV

LPF

FIR

OSF

SYNC

12

D/A CONVERTERMHzKHzUSB

DISPLAY OFFLOCK RANGE

1234

EXT

INPUT

POWER

①③⑤ ⑦

① Power Switch (Power)⑥ LPF Indicator

Press to turn on the power, and press again to turn off.
Sound is output after approx. 5 seconds have passed
since the power switch is turned on. The switch returns
to the same position whether the power is turned onor off.

When the analog low-path filter is on, the indicator islit red.

② Power Indicator (Power)
When the power is on, the indicator is lit red. When inexternal clock mode, the indicator is lit blue.

③ Invert Switch (INV)
Press to set the analog output phase to the inverted
phase. Press again to set it back to the original setting.

④ Invert Indicator
When in the inverted phase, the invert indicator is lit
red.

⑤ Low-path Filter Switch (LPF)
Press to turn on the analog low-path filter that
attenuates signals by 8 dB at 100 kHz. Press again toturn it off.
Notes:• This switch can be operated only when the LPF
switch on the rear panel is set to MANUAL.
• This switch cannot be operated when the LPF switch
on the rear panel is set to ON (DSD), and the analog
low-path filter is automatically turned on only when
DSD is input.

6⑦ Over Sampling Switch (OSF)
With this switch, over-sampling mode can be switchedbetween NOS (Non over Sampling) mode and FIR
mode. When in NOS mode, the NOS indicator is lit
green, and when in FIR mode, the FIR indicator is lit
red.
Notes:• The mode cannot be switched during audio playback
via USB input (when the sampling frequency isdisplayed). To switch the mode, stop the audio
playback and wait until the frequency display
disappears.
• For FIR mode, the filter characteristic can be selectedfrom “FIR1” and “FIR2” by using the FIR switch on
the rear panel.
• If the over sampling switch is pressed when it isdisabled, the indicator flashes.
• During DSD playback, NOS mode is not disabled.

⑧ Over Sampling Indicators
When in NOS mode, the NOS indicator is lit green,
and when in FIR mode, the FIR indicator is lit red.
Note:
• The over sampling indicator does not change during
audio playback via USB input.

⑪⑩⑮⑫D-2NOS

INV

LPF

FIR

OSF

SYNC

12

D/A CONVERTERMHzKHzUSB

123

LOCK RANGEDISPLAY OFF

INPUT

⑨⑬⑭4

EXT

POWER

⑨ Lock Range Switch (LOCK RANGE)⑬ Display OFF switch (DISPLAY OFF)

During FIR mode, the lock range can be changed
during COAX or AES/EBU input by using this switch.

Press to turn off all indicators and display except forthe power indicator . Press again to turn on the display.

Notes:Note:• During USB input, the lock range is fixed to SYNC
(synchronization mode).
• During NOS mode, this switch cannot be operated.
• If the switch is pressed when it is disabled, theindicator flashes.

• When the display is off, operating a switch turns
on the display for approx. 5 seconds and then thedisplay turns off again.

⑩ Lock Range Indicators
When in FIR mode, the lock range state is indicated.
SYNC: Synchronization mode (mode with the highestaudio quality)[1]: Mode with the narrowest lock range[2]: Mode with the standard lock range
Note:⑭ Input Selector (INPUT)
The input source can be selected with this selector.

⑮ Input Selector Indicators
The input source selected is indicated.
Note:• The EXT indicator is for a future extension.

• When in NOS mode, the indicator is turned off.

⑪ Sampling Frequency Display
During USB input, sampling frequency of the input
source is displayed.
Note:• The sampling frequency is not displayed during
COAX or AES/EBU input.

⑫ Sampling Frequency Unit Indicators
The unit (MHz/kHz) of the sampling frequency isindicated.

7

Rear Panel Names and Functions
asdfgsaa XLR Type Selection Switch (XLR)

f Coaxial Input Terminals (COAX 1, 2)

The balanced output terminal type can be selectedfrom the European type and USA type.
Euro type: pin 2 is HOT and pin 3 is COLD
USA style: pin 2 is COLD and pin 3 is HOT

External devices equipped with an S/PDIF format
applicable digital output terminal can be connected tothese terminals by using a 75-ohm coaxial digital cable.

Notes:g USB 2.0 Input Terminal• The default setting of this equipment is the Europeantype.
• When the USA type is selected, the RCA terminal
output phase is reversed.

s Analog Output Terminals
The line input terminal of an amplifier is connected toone of these terminals. One terminal is an unbalanced
output terminal (RCA terminal) and the other is abalanced output terminal (XLR terminal).
Notes:• From an audio quality standpoint, it is not recommended
to use both the unbalanced output terminal and thebalanced output terminal at the same time.
• DO NOT connect a short pin into the output terminals.
It causes a malfunction.

d AES/EBU Input Terminals(AES/EBU 3, 4)External devices equipped with an AES/EBU digital
output terminal can be connected to these terminals
by using an XLR digital cable.
Note:• These input terminals do not support dual AES/EBU.

8A computer, etc., can be connected to this terminalby using a USB 2.0 cable with a type-B connector(standard type). USB connection is achieved through aduplex communication between this equipment and acomputer. Jamming or cutting the communication may
result in serious error in the operating system of thecomputer. When a computer is connected via USB, do
not perform the following operations.
• Repeatedly turning on and off the power of thisequipment• Repeatedly switching the input between USB andany other settings by using the input selector• Repeatedly plugging and unplugging the USB cable• Connecting via a USB hub
Notes:• For a Windows computer, a designated driver isrequired. The driver can be downloaded from CSR,
Inc. website.
• If an error occurs, the frequency display flashes. In
this case, turn off the power of this equipment andthen turn it on again.
• For connecting with a mobile device or a tablet PC,
an OTG cable is required. There may be a casewhere an Android cell phone cannot be connectedwith this equipment.

hjkl A0 A1h External Clock Input Terminal(10MHz CLOCK)

A0 FIR Filter Characteristic Selector
Switch (FIR)

A device that outputs 10 MHz reference clock can beconnected to this terminal by using a 50-ohm BNC
coaxial cable.

When in FIR mode, the FIR filter characteristic can beselected from the following options.
FIR1: Fast Roll-Off Linear Phase Filter
FIR2: Fast Roll-Off Minimum Phase Filter

Note:• When connecting a device, make sure that thepower of this equipment is off.

j External Clock Selector Switch
The clock setting can be switched between the internal
clock and external clock.
Note:• When switching the clock setting, make sure that thepower of this equipment is off.

A1 LPF Switch
The analog LPF switch mode can be selected from theflowing options.
MANUAL:
Activates the low-path filter switch (LPF) on the frontpanel.
ON(DSD):
Automatically activates only when a DSD signal isinput.
Note:k AC Inlet (AC115V)
Connect to a 115 V AC wall outlet (mains) with thesupplied power cable.

l MONO Mode Switch
Stereo or mono can be set by selecting from STEREO,MONO Lch, and MONO Rch. When the switch is set toMONO Lch, sound is output only from the Lch output
terminal. When the switch is set to MONO Rch, soundis output only from the Rch output terminal.

• This setting disables the low-path filter switch (LPF)
on the front panel.
Cautions• When connecting a cable to any of the input terminals
or output terminals, make sure that the power of thisequipment is off.
• When performing any rear panel switch operations,
make sure that the power of this equipment is off.

9

USB Connection with a Computer

Balanced Input/Output

Windows

The XLR Connector is used for Balanced Input/Output.
There are two types of connection, “European Type”
and “USA Type”.

To play back DSD/PCM files, install the designateddriver to your computer.

Recommended computer specifications
OS :Windows10, Windows 8.1,Windows 8, Windows 7
CPU :Intel Core 2 processor,
1.6 GHz or higher
Memory : 1.0 GB or higher

Mac OS
Operations can be performed with a Mac OS X standarddriver.
When using Bulk Pet, install a driver to your computer.

1. European Type (adapter for this equipment)(pin 2 = HOT, pin 3 = COLD)HOTHOT

http://www.kcsr.co.jp/sn_software.html
2. Without this equipment connected to your computer,start your computer.
3. Before connecting this equipment to the computer,install the designated driver to your computer
following the instructions.
4. After the installation completes, restart the computer.
5. After the restart operation completes, connect thisequipment to the computer and then turn on thepower of this equipment.
6. Operate the input selector of this equipment toselect USB.
7. This equipment will be recognized by the computerand driver installation will start automatically.
Notes:• Depending on the computer specifications, installation
may take some time. Do not turn off both this equipment
and the computer until an installation completion
message appears.
• Depending on the operating system, certain settings
may be required for sound to be output. Configure
the settings according to the operating system usage
instructions.

103
GND
2 COLD
13INPUT
COLD

GND

INPUT

2COLD

OS : Mac OS X 10.11, Mac OS X 10.10,Mac OS X 10.9, Mac OS X 10.8 or later

1. Access the following website to download thedesignated driver.

GND

1

2. USA Type(pin COLD
2 = COLD, pin 3 = HOT)
GND

Recommended computer specifications

When using for the first time
(how to install the driver)

GND

21

GND

3
GND
1HOT
3INPUTHOT

2INPUT

GND

12HOT

3HOT
1 COLD
23OUTPUTCOLDOUTPUT12COLD

3COLD
2HOT
3OUTPUTHOT
1OUTPUTOn this equipment, use the XLR type selection switch(XLR) to select the desired type.

Attaching the Spike Pins
 y replacing the feet with the supplied spike pins,B
you can tune the audio quality. Point grounding makes
the sound focus and auditory lateralization sharper.
Furthermore, the audio quality can be subtly tuned
by changing the material of the surface on which thisequipment is installed.
Note:• When using the spike pins, be careful as theinstallation surface such as the surface of a table,shelf, etc., may become damaged.

Troubleshooting

MaintenanceNo sound is output.
• Check that the power of this equipment is on.
• Check that the appropriate input source is selectedwith the input selector.
• Check the connections of the external devices.
• Check that the power of the external devices ison.
• Check that the operations and settings on theexternal devices are correct.
• Check that you are not attempting to input a signalthat is not supported by this equipment.

When the equipment has become dirty, wipe it clean
using a soft cloth. To remove stubborn stains, dilute
some dish-washing liquid in 5 or 6 times as muchwater, soak a soft cloth in the solution, wring it out well,wipe away the stains, and then wipe the surfaces dry
with a dry cloth.
Never use alcohol, paint thinners, benzine, insecticides
or other volatile substances since they may mar orremove the surface gloss.
Bear in mind that rubbing surfaces with a chemicalcleaning cloth or leaving such a cloth in contact with asurface for an extended time may result in deterioration.

This equipment cannot be recognized by the computer.
• Check the connection with the computer.
• Check that a USB hub is not being used.
• Check that the appropriate input source is selectedwith the input selector.
No sound is output from the computer.
• Check that the computer settings are properly
configured.
• If suspension or hibernation has been used,sound might not be output after recovery. Turn off
the power of this equipment and then turn it on
again.
• If an error occurs on the computer while an audio
file is being played back, sound might not beoutput. Turn off the power of this equipment andthen turn it on again.

Specifications
Input format
USB............................ PCM, DSD (DoP v1.1, ASIO)
Coaxial, AES/EBU................. PCM, DSD (DoP v1.1)
Supported sampling frequency
USB..................................... Max. 768 kHz for PCM,
Max. 22.6 MHz for DSD
Coaxial, AES/EBU............... Max. 192 kHz for PCM,
Max. 2.8 MHz for DSD64 DoP v1.1
PCM quantization bit rate
USB....................................................... 24 bit, 32 bit
Coaxial, AES/EBU................................. 16 bit, 24 bit
USB profile........................... USB 2.0, USB Audio 2.0
Digital input........................................... USB (Type B),
2 coaxial inputs (S/PDIF), 2 AES/EBU inputs
External clock input................. 10 MHz (BNC 50 ohm)
Analog output.................. 1 XLR output, 1 RCA output
Frequency characteristic.......................................... 2 Hz to 120 kHz (+0/-1 dB)
S/N ratio........................................................... 110 dB
Total harmonic distortion................................. 0.008%
Analog filter......................... Two-dimensional passive
Power voltage.................................... 115 V AC, 60 Hz
Power consumption............................................. 56 W
Maximum external dimensions
Main unit................ 430 (W) x 160 (H) x 405 (D) mm
Weight............................................................. 17 kg

11https://www.soulnote.link/

Printed in Japan

11/2023 14BA851013 TM