S M S L A8 Integrated Digital Amp Instruction Manual

A8

Safety Notes

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK)
The lightning lash with arrowhead symbol, with in an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that 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 the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Safe use only under elevation 2000m.
Safe use only in the non- tropical climate conditions.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

Features

1. A8 digital ampliÞer developed and launched with co-operation from ICEpower company.
2. ICEpower 125ASX2(125W×2) used as ampliÞer module which featured with big power Output and ultra-low distortion.
3. Superior DAC chip AK4490 ,It’s advanced performance and ßoating point arithmetic digital Þlter are used by many top brands.
4. Using the 2nd gerneration of XMOS USB audio solution Xcore200 Xu208, PCM sampling rate support up to 768K and DSD512, Driver is exclusively customized and support native DSD,which is very advanced in audio range.
5. ASRC function can delete clock jitter from digital receiving signal.
6. Built-in SDB sound which patented belongs to SMSL (SMSL Dynamic Bass).
7. Built-in phono stage.

SDB:
SDB sound which patented belongs to SMSL, it improves the Þdecity of sound. For the best sound effects, SDB is not only improve BASS, but also will adjust dynamic for bass and treble according to Input source.

Specifications

THD+N:
DAC
Headphones
Speakers| 0.0017%
0.0037%
0.007%
Dynamic range:| DAC 118 dB
SNR:
DAC
Headphones Speakers| 110 dB
101 dB
120 dB
USB transmission:| asynchronization
USB compatibility:| windows XP/7/8/8.1/10; Mac OSX10.6 or later; Linux
Bit depth:
USB
Optical/Coaxial| 16bit, 24bit, 32bit, 1bit
16bit, 24bit
Sampling rate:
DSD
Optical/Coaxial| USB PCM 44.1kHz∼768kHz
2.8224MHz∼22.5792MHz
44.1 kHz ∼ 192kHz
Amplifier power:
8Ω| 4Ω 125WX2
75WX2
headphone amplifier power
32Ω
300Ω| 43mW
64Ω 35mW
150Ω 23mW
14mW
DAC output level:| 2Vrms
Amplifier consumption:| 90W
Standby power:| 4.5W

Remote controller

1. Insert the specified batteries in the remote control.
2. Do not short-circuit,disassemble,heat or dispose ofbatteries in flames.
3. Do not keep the battery in a place exposed to direct sunlightor in places with extremely high temperatures,such as near a heater.

Operating range of the remote control

Note
When you Þrst operate A8, press the A key Þrst

*FN user-deÞned function key can deÞne as:
① Input switch
② EQ switch
③ ASRC switch

Cables used for connections

Audio cable|
---|---
Optical cable|
Coaxial cable*|
USB cable|

Cautions

• Do not plug in the power cord until all connections have been completed.
• Be sure to connect the left and right channels properly and right.
• Pls refer to instrustion manual.
• Do not bundle power cords together with connection cables. Doing so can result in Humming or noise.

*Notes:
Audio cable,optical cable and coaxial cable are not included in A8 package box,If needed,users need to buy themself.

Computer

Note: Please visit http://www.smsl-audio.com to download A8 USB driver.

CD/DVD/BD Player

Turntable connection

Power supply and speaker wire connection

DAC Output

NOTE:
The input jack can connect with ampliÞer,headphone ampliÞer and active speaker.

Active subwoofer speaker connection

OPERATIONS

A. DisplayA
B. Function buttonB
C. Konb
D. 6.35mm headphone output

How to operating

1. Press and hold the function button to power on/off unit under main interface status.
2. Press the function button enters main menu display under main interface status; It enters sub-menu selections display by press function button under main menu status; Press function button returns to main menu display.
3. Press and hold function button returns to main interface display under main menu or sub-menu selections status.
4. Turn the knob clockwise to increase the volume or counterclockwise to decrease the volume on the unit under main interface display status. Revolving the knob to switch menu items under main menu display status.

Main interface display

(Main interface display)

1. Sampling rate
   （Note: When unit set mute, MUTING will show here. When no input signal, NO SIGNAL will show here.)

2. Input
   （Note: When sampling rate is no less than 96kHZ, Hi-Res golden logo shows here.)

3. Speaker mode of headphone mode. When headphone is playing with, it shows , When speaker is playing with, it shows .
   （Note: When unit set mute, logo shows here)

4. Volume
   A8 featured with memorizing volume function even unit is powered off. if Volume was up to 18 in last time usage, initial volume will be as low as 18 when you restart it.If volume was lower than 5 in last time usage,initial volume will be raising to 5 itself.

5. If a logo shows here, pre-output is adjustable.if no logo appears, DAC output is Þxed value.

6. If a logo shows here,the output was adjusted by ASRC function.
   Otherwise, no logo means without ASRC function adjusted.

7. When logo shows here,EQ function active.When no logo shows here,EQ function off.

A8 main menu display.

1. Total main menu selection pages
2. Current page for selected menu
3. Menu item name
4. selected mode for this menu
5. menu status

Press the function button enters main menu under main interface status display and then select the items by revolving the knob.

Input mode menu (Figure 1)

USB input source music is playing with currectly. Turning the knob to switch input, A8 totally featured with seven kinds of input.

Output mode menu (Figure 2)

Speaker output mode as show i ng i n Þgure 2.Turning the knob to switch ouput mode.
There are totally three kinds of ouput mode.The factory default output is DAC.

SP ↔ HP
(Speakers out) ↔ (Headphones out)

EQ mode menu (Figure 3)

DIRECT,SDB,TONE are the EQ selectable mode.
Turning the knob to switch select.
(NOTE: When DAC output, it will be without EQ function and EQ function can not overlay.)

DIRECT ↔ SDB ↔ TONE

Treble adjustment menu (Figure 4)

Turning the knob is able to adjust treble level. Figure shows treble adjustment function on. Treble adjustment range is -10dB to 10dB.
(NOTE: When you adjust treble at DIRECT or SDB EQ mode status, the EQ mode will automatically Switch to TONE mode. Treble adjustment with memorizing function.)

Bass adjustment menu (Figure 5)
Turning the knob is able to adjust bass level. Figure shows bass adjustment function on.
Bass adjustment range is -10dB to 10dB.
(NOTE: When you adjust BASS at DIRECT or SDB EQ mode status,the EQ mode will automatically Switch to TONE mode.BASS adjustment with memorizing function.)

ASRC (Figure 6)

Signal processing with ASRC mode as shows in figure 6.
Turning the knob to process asynchronous sample rate.
Totally four levels selections for asynchronous sample rate processing.

OFF ↔ 1X ↔ 2X ↔ 4X

ASRC setting (As chart below)

Sample rate display (Figure 7)

DIR stands for digital input sample rate.Turning the knob to switch sample rate display mode.
Two way sample rate display of A8.

DIR ↔ ASRC
Input Frequency ↔ True Frequency

Pre Amp volume adjustable (Figure 8)

If screen shows “off” under this sub-menu display, it means that Pre amp output can not set volume. Turning the knob and switch to “ON”,the volume will be adjustable.
When the unit play with speaker output and pre Amp function on,The unit speaker output will be off.When the unit play with headphone output and pre Amp function on,The unit headphone output is working also.
Note: When the unit play with headphone and PreAMP function on,the volume knob controls both.

Pre AMP OFF ↔ Pre AMP ON

FN-KEY (Function Key on remote) (Figure 9)

FN key only for packed remote control.
Pressing FN key on remote to set totally three kinds of under-deÞned functions.
Output menu as display setted by FN.Turning the knob to switch user-deÞned function under this FN KEY sub-menu.

OUTPUT ↔ EQ ↔ ASRC

Font color setting menu (Figure 10)

White font as display shows,turning the knob to switch font color.Totally six kinds of font color setting.

Dimmer setting (Figure 11)

This unit get six different dimmer level,turning the knob to set it.

Factory setting
Pressing and hold the power button before the unit is electriÞed, and then power it on and release button until screen shows letters.

Shenzhen Shuangmusanlin Electronics Co., Ltd.
Address:8th Floor B6 Building Jun Feng Industrial Park Fuyong ,
town BaoAn District Shenzhen China, ,
Tel: +86-755-27444178
http://www.smsl-audio.com

References

• SMSL Audio Official -Professional audio product manufacturer
• Manual-Hub.com – Free PDF manuals!

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