Cayin SC-6LS MK2 User manual

User's Manual
VACUUM TUBE PRE-AMPLIFIER
-SC 6LS MK2
ON
OFF
POWER
VOLUME
MI N MA X
SELECTOR
1
2
3
4

1
Thanks for choosing CAYIN SC-6LS MK2 and please read the user's manual
carefully before installation and operation.
Vacuum Tube Pre-Amplifier
Table of Contents
Table of Contents………………………………………………………………………………… 1
…………………………………………………………………………………………………………2
……………………………………………………………………………………………………………3
…………………………………………………………………………………………………………3
………………………………………………………………………………………………………………4
Maintenance…………………………………………………………………………………………………………………5
……………………………………………………………………………………………………………5
…………………………………………………………………………………………………………………6
…………………………………………………………………………………………………………………7
………………………………………………………………………………………………………………8
…………………………………………………………………………………………………………………9
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…………………………………………………………………………………………………………………11
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…………………………………………………………………………………………………………………13
Small Tips …………………………………………………………………………………………………………………13
…………………………………………………………………………………………………………14
………………………
Package Contents
Product Features
Safety Precautions
Specifications
Warranty Service
Precautions
Front Panel
Rear Panel
Top Panel
Remote Control
Installation
Tube Replacement
Audio Connection
Turning on
Troubleshooting

Please carefully check the package first and then open it.
Package contents include:
1. CAYIN SC-6LS MK2 1 piece；
2. Main Fuse 2 pieces；
3. Power cord 1 piece；
4. Remote Control 1 piece；
5. (AAA) Battery of 1.5V 2 pieces；
6. User's Manual 1 piece；
Please make sure local voltage level is matched with the input level of the amplifier,which indicates on the
rear panel. Too low or too high voltage may cause problem. Please contact our company or our local agent if
you've found improper voltage.
Recommendation:
Keep all packing materials for future use .
CAYIN SC-6LS MK2 is designed and manufactured with our original parts and
reaching the best results. We are not responsible for problems and damages caused by non-original parts
replacement in the amplifier.
Vacuum Tube Pre-Amplifier
NOTE:
2
Package Contents
All other parts except above are not included.
NOTE:

1. Unplug the power cord if you are not going to use the product for an extended period of time.
2. The machine will become hot after working for a long time. Please keep the unit's ventilation open and install
the amplifier at a well-ventilated place to avoid troubles and fire hazard.
3. Forbidden to operate when the output is open or shorted.
4. Do not attempt to service this product yourself. Opening the cover may expose you to dangerous voltage or
other hazards.
5. We are not responsible for any problems caused by checking and opening without permission of our
company. For service, Please contact a qualified service technician.
6. Do not place any objects filled with liquids such as vases or some others on the top or around.
7. Clean only with dry cloth.
8. Please move the amplifier carefully not to drop the unit or be subject to other strong shocks.
3
Product Features
Safety precautions
◆ Hand-made construction with the finest point-to-point wiring.
◆ Soft start function (about 30 seconds).
◆ Thickly silver-plated signal cable has been used.
◆ Equipped with easily-installed tube cover for protection.
◆ With OUT1, OUT2 output terminals.
◆ Specially designed EI transformer for power supply.
◆ Four JJ 12AU7/ECC82 for the line amplification.
◆ Two RCA 22DE4 rectifier tube for rectification.
◆ America multicap and Japan TAKMAN resistor are applied.
◆ Aluminous remote control is applied.

4
Specifications
◆ To reduce the risk of electric shock, do not remove the cover.
◆ No user serviceable parts inside. Refer servicing to qualified
service personnel.
◆ To reduce the risk of fire or electronic shock, do not expose
the unit to rain or moisture.
The lightning flash with arrowhead symbol is intended to alert user to the presence of uninsulated
“dangerous voltage” within the product's enclosure that may be of a risk shock to persons.
The exclamation point is intended to alert user to the presence of important operation and maintenance
(servicing) instructions accompanying the appliance.
【 】
【Plusgaining】
【Frequency Response】
【THD】
【S/N Ratio】
【Input Sensitivity 】
【Input Impedance】
【Output Impedance】
【Max Power Consumption】
【Tube】
【Input Terminals】
【O】
【WDH】
【Net Weight】
【Working Condition 】
【Storage Condition】
Output Voltage
uput Terminals
2V(22V MAX)
15dB(1KHz)
5Hz～100KHz(-1dB)
.04%（1KHz）
95dB
350mV
100KΩ
280Ω
JJ 12AU7/ECC82x4、RCA 22DE4x2
1、2、3 4
、
OUT1、OUT2
Temperature °C °C Moisture
Temperature °C °C Moisture
0
45W
286×328×193mm³
12.5kg
0 ~40 20%~80%
-20 ~70 20%~90%
RISK OF ELECTRIC SHOCK
CAUTION
DO NOT OPEN

Warranty Service
1.This product is warranted for a period of twelve months beginning from the date of purchase.
2.The defective product must be returned to your dealer or our company for repairing when your dealer or our
company accepts your requirement.
3.The warranty doesn't extend to any product that has been opened by you without permission of our company.
NOTE:
◆
◆
Use the soft dry cloth to clean up the chassis regularly.
Do not use any chemicals for cleaning.
Maintenance
5
The information in this manual is subject to change
without further notice.
NOTE:
ON
OFF
POWER
VO LU ME
MIN M A X
SELECTOR
1
2
3
4

STEREO PRE-AMPLIFIER
RISK OF ELECTRIC SHOCK
CAUTION
DO NOT OPEN
SC-6L S MK2
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO., LTD. T500 AL250Vm
OUTPUTINPUT
1234OUT1OUT245
Precautions
YALIDA YN-401
◆ Connect the power only after finishing other connections.
◆
◆
◆
It is normal that power transformer becomes hot for extended period of operation.
Unplug the power cord if you're not going to use the product for an extended period of time.
Please make sure corresponding voltage is the same as required. We are not responsible for damage caused
by misuse of unsuitable voltage.
6
Connected to AC Input
NOTE:
Connected to the power socket
Connection of power cord:
Connect the speaker cables and signal cable first
and then insert the power cord into the power socket.

7
Front Panel
⑤
⑥. ：
④. Power indicator
When starting up, the indicator light.
.Power Switch：
Used to switch on/off the amplifier.
Volume Knob
Used to control volume
Please select corresponding input and corresponding
input indicator will be on.
②.IR Remote Sensor
Used to receive the code of remote control.
③.
You can hear sound from 1 when 1 indicator is on.
You can hear sound from 2 when 2 indicator is on.
You can hear sound from 3 when 3 indicator is on.
You can hear sound from 4 when 4 indicator is on.
Cayin SC-6LS MK2 has memories and it will default last
operation state when turning on.
①
Used to choose 4 types of audio sources.
Input Selection Indicator：
.Input Selector：
：
1 2 3456
ON
OFF
POWER
VO L UME
MIN M AX
SELECTOR
1
2
3
4

8
Rear Panel
①
②Output Terminal
Used to connect to the unbalance input terminal of power amplifier.
③
.
Used for audio source input.
.
.Power Socket with Main Fuse
Main fuse is located just below the power socket.
Signal Input Terminal
STEREO PRE-AMPLIFIER
RISK OF ELECTRIC SHOCK
CAUTION
DO NOT OPEN
SC-6L S MK2
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO., LTD. T500 AL250Vm
OUTPUTINPUT
1234OUT1OUT245
21 3

Top Panel
9
NOTE
◆ Be careful of the high temperature of the tubes during operation.
◆ Please replace the power tubes after switch off in 20 minutes, and follow the suggetion to unplug the
inset the tubes.
◆ Power tubes must be matched for well function.
◆ Make sure the supply voltage is 220V before bias adjustment.
◆ Even under normal working state, the point of the bias meter could move for the voltage fluctuation.
① V5、V6:22DE4
② V1、V2、V3、V4:JJ 12AU7/ECC82
V6 22DE4
/
V5 22DE4
/
V3 12AU7
/
V4 12AU7
/
V2 12AU7
/
V1 12AU7
/
2
1

◆ Don't drop the remote control. Keep the remote control dry.
◆
◆
◆
◆
Replace the batteries timely.
Don't mix new and old batteries together and use
the batteries with the same specification.
Take out the batteries if you don't use the remote control
for an extended period of time.
Batteries with high quality are recommended.
10
Remote Control
Installation
1. Place the remote control right-side up. Screw the rear
cover open with the attached hexagon screwdriver.
2. Pull out the (AAA)battery case carefully (do not break
the wires connected).
3. Put in the batteries with correct polarity.
4. Push in the battery case and screw the rear cover close.
Effective Distance：about 6m
1. Triode/Ultralinear Selector
(This button is invalid for this device)
2. Audio Source Input Selector
3. Mute Button
4. Volume Control Selector
NOTE:
ON
OFF
POWER
VOLUME
MIN M A X
SELECTOR
1
2
3
4

Carefully read and follow the manual for installation:
◆ Do not place the machine near heat sources such as radiators, heat registers or other products that produce
heat.
◆ In order to avoid being overheated please keep the unit's ventilation open.
◆ Do not expose this appliance to rain or moisture.
◆ Keep the amplifier in a certain distance so that it can be easily connected.
◆ Amplifier should install steadily and make sure all four feet are on the same level.
◆ Keep the amplifier over 15cm's distance to the surrounding walls.
Installation
Please make sure local voltage level is matched with
the input level of the amplifier, which indicates on the
rear panel. Too low or too high voltage may cause
problems or shorten the amplifier's life.
Tube Replacement
NOTE:
Tubes for the Machine Tubes Replacement
JJ 12AU7/ECC82
RCA 22DE4 22DE4
ECC82、ECC802
11

Audio Connection
Connection method of CAYIN SC-6LS MK2 with other audio equipments Take pictures below for your reference.
•
•
•
•
•
Pleace refer to the manuals of other connected
equipments during the installation.
Do not insert the power cord into the main socket
before all other equipments are well connected.
R refers to right channel while L represents left
channel.
Please take the right guidance for connection as
wrong connection may cause noise, low-grade
function or damage.
Do not fasten signal cable together with power
cable and speaker cables. It will worsen the
acoustic fidelity.
Wrong connection
Right connection
NOTE:
speaker
（Right）
HIFI COMPACT DISC PLAYER
ON OFF
kHz
bit
192
24
MUTE
SOURCE
CDT- AMK2
15 VACUUM TUBE TRANSISTOR ANALOG OUTPUT
RED
BLACK
speaker
（Left）
BLACK
RED
STEREO PRE-AMPLIFIER
RISK OF ELECTRIC SHOCK
CAU TION
DO NOT OPEN
SC-6L S MK2
ZHU HAI SPA RK ELE CTRON IC EQUI PMENT C O., LT D. T500 AL250Vm
OUTPUTINPUT
1234OUT1OUT245
16
SPEAKER OUTPUT INPUT
MO NO BLOCK POWE R AMPLI FIER
RISK OF ELECTRIC SHOCK
CAU TION
DO NOT OPEN
9084DMK2
ZHUHAI SPARK ELE CTRONIC E QUIPMEN T CO.,LTD .
AC INPUT
T2AL250V
16
SPEAKER OUTPUT INPUT
MO NO BLOCK POWE R AMPLI FIER
RISK OF ELECTRIC SHOCK
CAUTION
DO NOT OPEN
9084DMK2
ZHUHAI SPARK ELE CTRONIC E QUIPMEN T CO.,LTD .
AC INPUT
T2AL250V
To audio output terminal
12
220V50Hz200W220V50Hz200W

•
•
•
Turn on the amplifier, the power indicator will be on and
the working indicator will keep flickering.
The working indicator will be on after 30 seconds. It
means that the amplifier is working normally. If the
working indicator is off, please turn off the power and
contact with our local agent or our company.
Select the right audio source channel, adjust the volume
to a certain position and then you can enjoy themusic
you prefer.
NOTE：
◆Turn on: CD player→decoder→pre-amplifier
→power amplifier
◆Turn off: power amplifier→ pre-amplifier→
decoder→ CD player
Turning On
Before turning on the amplifier please make sure all connections are right and power supply is stable.
1. When the audio system is under working state, don't
unplug the signal cable or speaker cables, or it will
cause damage to the amplifier and other equipments.
2. It should at least takes 2 minutes before you turn on the
power again, or it will cause damage to the vacuum
tubes.
NOTE:
Read the Manual—— Please read the user's manual carefully before installation and operation.
Keep the Manual——Please keep the manual for future reference.
Warning Signs——Don't tear off or rub off the serial number.
Operation——Do the operations as you are instructed in the Manual.
Parts—— If you are going to use parts not supplied by our company like power cord, fuses etc please
make sure that parts you used are compatible with the safety requirements. Or it will cause fire or electric
shock.
Placement——Put the amplifier on a level place. Make sure that it doesn't bring damage to the children,
adults and the amplifier itself.
Power——Please make sure the local voltage is the same level as indicated on the rear panel.
Overload——If the power socket is overloaded with other equipment, it will cause fire or electric shock.
Warranty Service——Do not open the product and change the components inside yourself. Opening
the cover may expose you to dangerous voltage or other hazards. The warranty doesn't extend to any
product that has been opened by you without permission of our company.
Troubleshooting——If any problems when you are using the product, please check according to
following tips to look for the exact reason. Please contact with our company if you can't solve the
problem.
Sma ll Tip s
13

Please follow the instruction in the manual in order to keep the amplifier work in its best state. If wrongly
operated and you thought that would be troubles please check according to following tip to look for the exact
reason.
NOTE: is the registered trademark of Zhuhai Spark Electronic Equipment Co., Ltd.
Troubleshooting
Problem Cause Remedy
NO OUTPUT
Power is OFF.Indicator
Power is ON.Indicator
Noise output
Sound field Positioning
is not so good.
Power cord is not well-connected.
Main fuse is out.
Troubles of inner parts or components.
Volume is at ZERO.
NO signal input.
Ground of input signal cable is open
or bad contact of the input signal
cable.
Components or circuits are in trouble.
Signal input cables or speaker
cables are wrongly connected.
Check power cable connection
or power outlet connection
Replace with the same type
and value fuse.
Please contact with local
agents or our company.
Turn up the Volume.
Check the function of the
sound source.
Check the input selection and
switch to the proper input.
Replace the input signal
cable with a new one.
Please contact with local
agents or our company.
Reconnect it as suggested in
the manual.
Malfunction of Remote
Control.
Be disturbed.
Low Battery.
Obstacles between the amplifier and
remote.
Keep away from the source of
disturbance. Turn off and restore.
Replace with new batteries.
Remove the obstacles.
14