A-2T

User Guide

Integrated Amplifier

A-2

12

34SELECTOR

POWER

5INTEGRATED AMPLIFIER

6VOLUMEVOLUME

Table of Contents
Safety Precautions................................................................................................3
Front Panel Names and Functions.......................................................................6
Rear Panel Names and Functions........................................................................7
Remote Control Button Names and Functions.....................................................9Display..................................................................................................................9
Remote Control...................................................................................................10
Balanced Input/Output........................................................................................10
Attaching the Spike Pins..................................................................................... 11
Troubleshooting.................................................................................................. 11
Maintenance....................................................................................................... 11Specifications...................................................................................................... 11

Supplied Accessories• User Guide (this manual)........................... 1• Remote control........................................... 1• Power cable............................................... 1• AAA (LR03/R03) battery............................. 2• Spike pin.................................................... 3• Wrench (Spanner)...................................... 12

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 EQUIPMENT

This 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 Functions
①②

③

④

⑤

⑥

⑦

A-2

12

3

4

5

INTEGRATED AMPLIFIER

6SELECTOR

VOLUMEVOLUMEPOWER① Power Switch (Power)⑥ Audio Volume Display

Press to turn on the power, and press again to turn off.
The switch returns to the same position whether thepower is turned on or off.

The lowest audio volume is “0” and the largest is “35.”The display flashes while muted.

② Power Indicator (Power)⑦ Volume Jog Dial

When the power is turned on, the indicator is lit red.
When in power amplifier mode, the indicator is lit blue.

Audio volume can be adjusted by turning the jog
dial. Turn in clockwise to increase the volume. The
volume can be adjusted in 36 increments from 0 to 35
increments.

③ Input Indicators

Note:

The indicator of the selected input source is lit.

④ IInput Selector Jog Dial
An input source (1 to 6) can be selected by turning thejog dial.
Note:• Even after turning off the power, the latest selection
made with the jog dial will remain in the memory.

⑤ Remote Sensor
The remote sensor receives infrared signals from theremote control.

6• Even after turning off the power, the latest volume
setting made with the jog dial will remain in thememory.
If the volume is set to 26 or higher, the volume of 25
will remain in the memory for your safety.

• An operation noise occurs during the volume
setting due to relay switching inside the main unit.
This is not a malfunction.

Rear Panel Names and Functions

q w

er
q Pre-main Amplifier/Power Amplifier
Selector Switch
With this switch, the amplifier mode can be switchedbetween pre-main amplifier and power amplifier.
Notes:• When in power amplifier mode, the micro-computer
stops and the input selector jog dial and the volume
jog dial are disabled.
• When in power amplifier mode, the inputs s, d, g,tyiut Input Terminals (RCA)
These terminals are used to input unbalanced audio
signals via an RCA pin cable. When in mono mode,use the L channel for the input.

y Input Terminals (XLR)
These terminals are used to input balanced audio
signals via an XLR connector cable. When in monomode, use the L channel for the input.

and h are disabled.

w Input Selector Switch for Power
Amplifier Mode
When in power amplifier mode, the input mode can beselected from input a (XLR input) and input f (RCAinput).

u Speaker Terminals
These terminals are used for speaker connections.
To each of these speaker terminals, 4-ohm or higher
speakers can be connected. When in Bi-amp monomode, the same sound is output from both the left andright channels. When in BTL mono mode, connect ⊕of the speaker to L channel ⊕ and ⊖ of the speakerto R channel ⊕.

e Stereo/Mono Selector Switch

Notes:

Stereo or mono mode can be selected.

• Turn off the power before connecting a cable to theinput terminal or the speaker terminal, or before
reconnecting speakers that are connected viaspeaker cables.
• Due to the superior frequency characteristic of themain unit , DO NOT connect any devices otherthan speakers. Connecting a speaker selector ormeasuring equipment causes a high-frequency
connection of the input GND and the output GND,
which may result in protection circuit activation or
malfunction of the main unit.

r BTL/Bi-amp Selector Switch
When in mono mode, the connection type can beselected from BTL and Bi-amp.

7

i AC Inlet• Place the speaker cables and the input cables as far
away from each other as possible.
• Connecting a speaker with less than 4-ohm
impedance may cause sound distortion or protection
circuit activation during playback.
• While each of output terminals consist of the ⊕ (red)and ⊖ (black) polarities, speaker systems also havethe ⊕ and ⊖ polarities. Be sure to connect ⊕ to⊕and ⊖ to ⊖ (except for BTL connections).

Connect to a 115 V AC wall outlet (mains) with the supplied
power cable.

n Mode Setting and Combinations
By combining settings using the selector switches q, w, e, and r, the following 6 types of mode are available.
• Stereo, pre-main amplifier• Bi-amp, mono, pre-main amplifier• BTL, mono, pre-main amplifier• Stereo, power amplifier• Bi-amp, mono, power amplifier• BTL, mono, power amplifier
For connections in each mode, refer to the following table.
12Input
3
4

5

6

L-CH

P

PPP

P

P

L-CH

R-CH

P

PPP

PP

R-CH

L-CH

P

P

PP

P

P

L-CH

Selector switch position
STEREO

BI-AMP

PREMAIN AMP
MONO

BTL

STEREO

BI-AMP

POWER AMP
MONO

BTL

8R-CH
L-CH

Speaker terminals

R-CH

PPPP

R-CHPP

L-CH
R-CH

L-CH

PP

L-CH

R-CHP

P

R-CH

L-CH

P

P

L-CH

R-CH
L-CH
R-CH

R-CH

PP

L-CH
R-CH

⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖⊕⊖

PPPPPPPPP-P-PPPPPPPPP-P-

Remote Control Button Names and Functions

Grayed-out buttons are notsupported by this equipment.
Note:
These buttons can be used for
devices such as SOULNOTE
CD players.

Volume Button
Adjusts the volume.

Input Selector Button
Select one of the input sources that areconnected to the audio input terminal.

Mute Button
Press to mute soundand press again tocancel mute.
While muted, the audio
volume display flashes.

Display Button
Press to turn off the display and press
again to turn on the display.
To enjoy sound of higher quality,
turning off the display is recommended.
Whether the display is on or off,
operation of the control microcomputeris stopped except during operationof this equipment.

Displayn Normal Display
The volume is displayed as a 2-digit number.

Volume displayto9Remote Control
n Notes on Operation

Approx. 5 m60˚Remote control

Operate the remote control within approx. 5 m distancefrom the front panel of the main unit within an angle of
60°to the remote sensor.
• Prevent the remote sensor from being exposed tostrong light.
• Do not place any obstacles between the remotecontrol and the remote sensor.
• Do not use other remote controls while using theremote control for the main unit.

n How to Change the Batteries
Remove the lid on the rear side of the remote control
and insert 2 AAA (LR03/R03) batteries as indicatedinside the battery compartment. After inserting thebatteries, attach the cover again.

• Insert batteries with the correct polarity as indicatedby the “+” and “–” symbols inside the battery
compartment.
• Do not use old and new batteries at the same time.
Doing so may cause battery leakage or rupture.
Furthermore, do not use different types of batteries
together.
• Do not short-circuit, disassemble, or heat batteries.
Do not throw batteries into a fire.
• When not using the remote control for a long periodof time, remove the batteries.
• If battery leakage occurs, wipe the battery liquidfrom the battery compartment and then insert newbatteries.
• When disposing of batteries, follow appropriate local
guidelines and regulations such as ordinances.

Balanced Input/Output
The XLR Connector is used for Balanced Input/Output.
There are two types of connection, “European Type”
and “USA Type”.
1. European Type (adapter for this equipment)(pin 2 = HOT, pin 3 = COLD)
HOT
HOT

21

GND

3
COLDGND
21
INPUT
3COLD

GND
GND

INPUT

13HOT GND
21INPUT
3HOTINPUT

HOT

3COLDHOT12OUTPUT3COLD
OUTPUT

2. USA TypeGND
GND(pin 2COLD= COLD,
21pin 3 = HOT) 1COLD

2GND

2COLD

3HOT COLD
12OUTPUT
3HOTOUTPUT

On this equipment, use the XLR type selection switch(XLR) to select the desired type.
Cautions on Batteries• Use AAA (LR03/R03) batteries for the remote control.
• Replace the remote control batteries with new ones
after approx. 1 year has passed.
• If you cannot operate the main unit by using theremote control at a short distance from the main unit,change the batteries with new ones even if 1 year
has not yet passed.
• The supplied batteries are only for an operation
check. Replace them with new ones as soon as
possible.

10

Attaching the Spike Pins

MaintenanceIf you replace the 3 feet attached to the main unit
with the 3 supplied spike pins, you can tune the audio
quality with 3-point grounding. The 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
the main unit is installed.

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 or
remove 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.

Note:• When the spike pins are attached, it may be difficult
to keep weight balance stable. Take great care not tocarelessly apply a force on the corners of the main unit.

Specifications
Rated output.................................100 W x 2 (8 ohm)
200 W x 2 (4 ohm)
400 W x 1 (8 ohm BTL)
Total harmonic distortion......... 0.03% (50 W, 8 ohm)
Frequency characteristicCautions• When using the spike pins, be extremely careful
not to get injured, etc.
• When using the spike pins, be careful that thesurface on which the main unit is installed suchas the surface of a table, shelf, etc., may become
damaged.

Speaker (8 ohm, 1 W)....3 Hz to 240 kHz (±1.0 dB)
Input sensitivity/impedance
LINE1........................................... 700 mV/16 kohm
LINE2, 3, 4..................................... 700 mV/8 kohm
S/N ratio............................... 110 dB (IHF A network)
Power voltage.................................115 V AC , 60 Hz
Power consumption.........................................355 W
125 W (during idling)
Maximum external dimensions

Troubleshooting

430 (W) x 160 (H) x 423 (D) mm
Weight.............................................................. 20 kg

No sound is output.
• Check that the power of the main unit is on.
• Check that the appropriate input source is selected.
• Check the connections of the external devices.
• Check that the power of the external devices is on.
• Check that the operations and settings on theexternal devices are correct.
• Check the connections of the speaker system.
The remote control does not operate.
• Check that the remote control batteries are notworn out.
• Check that the distance between the remotecontrol and the main unit is not too far or that there
is no obstacle between the remote control and themain unit.

11https://www.soulnote.link/

Printed in Japan

11/2023 09BA851013 TM