Cayin CS-100A User manual

Vacuum Tube Integrated Amplifier
CS- A100
A1
POWER
ON OFF
A2A4
A3B1
B2B4
B3
VO LU ME
MI N MA X
SELECTOR
VACUUM TUBE INTEGRATED AMPLIFIER CS-100A
BIAS SELECTOR
TR UL
LINE1PRE-IN
LINE2LINE3
REV：1.1
User's Manual

Table of Contents
Thanks for choosing CAYIN CS-100A Integrated Amplifier and please read the user's manual
carefully before installation and operation.
In order to prevent damage during transportation, the amplifier is packed with protective foams surrounding
the tubes. Before installation and operation, please remove these foams to avoid any risks.
Vacuum Tube
1
Table of Contents
Package Contents…………………………………………………………………………………………………………2
Product Features…………………………………………………………………………………………………………3
Safety Precautions………………………………………………………………………………………………………3
Specifications………………………………………………………………………………………………………………4
Maintenance………………………………………………………………………………………………………………5
Warranty Service…………………………………………………………………………………………………………5
Precautions…………………………………………………………………………………………………………………6
Front Panel…………………………………………………………………………………………………………………7
Rear Panel…………………………………………………………………………………………………………………8
Top Panel……………………………………………………………………………………………………………………9
Remote Control…………………………………………………………………………………………………………10
Installation………………………………………………………………………………………………………………11
Tube Replacement ……………………………………………………………………………………………………11
Audio Connection………………………………………………………………………………………………………12
Speaker Connection……………………………………………………………………………………………………13
Turn on……………………………………………………………………………………………………………………14
Small Tips…………………………………………………………………………………………………………………14
Troubleshooting ………………………………………………………………………………………………………15
How to Install Vacuum Tubes…………………………………………………………………………………………16
…………………………………………………………………………………………………………1

Please carefully check the package first and then open it.
Package contents include:
1. CAYIN CS-100A 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. Users' 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 CS-100A Vacuum Tube Amplifier 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.
Integrated
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
◆ Eighty watts per channel in Class AB Ultra-linear mode, Fifty watts per channel in Triode mode,
push pull amplifier design.
◆ 6SN7GTB voltage amplification stage, 12AU7EH phase invertor and voltage amplification,
12BH7EH voltage amplification and driver stage, KT88 or EL34 output tubes.
◆ Three pairs of line inputs, one pair of Pre-In and one pair of Sub Output.Standard with remote
volume control, has 4 ohm and 8 ohm speaker impedance.
◆ Triode or ultra-linear mode switches, EL34 or KT88 selection, external bias adjustment with meter
mo nitoring.
◆ Anodized aluminum front, fully vented chassis with excellent gorgeous finish, hand-made
construction with the finest point-to-point wiring,Soft-start circuit to protect the amplifier for
extended life of sensitive components.
◆ With Pre-In input CS-100A can work as a Power amplifier.
◆ Premium Parts: Alps volume control, Audio grade capacitors and carbon film resistor, Toroid
transformer for power supply, Wide bandwidth EI output transformer, Ceramic tube sockets,
etc.
◆ Available front finish: Silver and Black.
Product Features
Safety precautions

4
Specifications
Power Output
TR:50W+50W (RMS Triode mode)
UL:80W+80W (RMS Ultralinear mode)
Frequency Response
8Hz~75kHz (-3dB)
THD
1%(1kHz)
S/N Ratio
92dB
Input Sensitivity
450mV (Integrated)
1300mV (PRE-IN)
Input Impedance
100kΩ
Output Impedance
4Ω, 8Ω
Input Terminals
LINE1,LINE2,LINE3,PRE-IN
Output Terminals
SUB OUT
WDH
420mm×394mm×200mm
Tube
KT88(EL34)×8、6SN7GTB×1、12AU7EH×2、12BH7EH×2
Net Weight
29.5kg
Max Power Consumption
480W
Working Condition
Temperature：0℃～40℃ Moisture：20%～80%
Storage Condition
Temperature：-20℃～70℃ Moisture：20%～90%
◆ 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.

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.
Maintenance
5
NOTE:
◆
◆
Use the soft dry cloth to clean up the chassis regularly.
Do not use any chemicals for cleaning.
The information in this manual is subject to change
without further notice.
NOTE:
A1
POWER
ON OFF
A2A4
A3B1
B2B4
B3
VOL UME
MI N MA X
SELECTOR
VACUUM TUBE INTEGRATED AMPLIFIER CS-100A
BIAS SELECTOR
TR UL
LINE1PRE-IN
LINE2LINE3

Precautions
◆ 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
Connection of power cord:
Connect the speaker cables and signal cable first and then insert the power cord into the power socket.
NOTE:
YALIDA YN-401
Connected to AC INPUT
Connected to power socket
LEFT OUTPUT
RIGHT OUTPUT
INPUT
LINE2
LINE1LINE3PRE-IN TUBE SEL.
EL34
KT88
MODEL : CS - 100A
SER.NO. :
VACUUM TUBE INTEGRATED AMPLIFIER
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO.,LTD.
SUB OUT
OUTPUT
2
1

7
Front Panel
1.
2. Power indicator
Turn on the amplifier the power indicator will be
on.
6.
Power Switch
Used to switch on/off the amplifier.
Note: Unplug the power cord if you're not going to
use the product for an extended period of time.
4. Power Indicator/Mute Indicator
Used to indicate the working state. The indicator
will be on when it is working normally. The
indicator will flicker for 30 seconds when it delays
to work. The indicator will keep flickering when it
is at mute state.
5.Volume Knob
Used to control volume
Input Selection Indicator
You can hear sound from LINE1 when LINE1
indicator is on.
3. Bias Selector Switch(A1、A2、A3、A4、
B1、B2、B3、B4)
Used to select corresponding tube for bias
adjustment.
You can hear sound from LINE2 when LINE2
indicator is on.
You can hear sound from LINE3 when LINE3
indicator is on.
You can hear sound from PRE-IN when PRE-IN
indicator is on.
Cayin CS-100A has memories and it will default
last operation state when turning on.
7.Triode/ Ultralinear
It is at triode working state if the TR indicator is
on.
It is at ultralinear working state if the UL indicator
is on.
Cayin CS-100A has memories and it will default
last operation state when turning on.
IR Remote Sensor
Used to receive the code of remote control.
9. Input Selector Knob
Used to select four kinds of audio
sources.The input selection indicator will be
on according to the input audio sources.This
function can be operated on the remote
control.
8.
Diagram 1：CS-100A FRONT
8
14 5 2 3 697

8
Rear Panel
1. Signal Input Terminal
Used for audio source input.
2. Signal Output Terminal
Used for audio source output.
3. Tubes Selection Switch
Used to select tube EL34 or KT88.
4. Right Channel Output
Used to connect with the right channel of speaker.
5. Left Channel Output
Used to connect with the left channel of speaker.
6. Power Socket with Main Fuse
Main fuse is located just below the power socket.
Replace the fuse with the same type as indicated.
Power tube replacing:
1. Refer to the "Tube Replacement" on page 11,
find out what types of tubes you can use for
replacement.
2. Tube Sel. on the rear panel must be turned to
position KT88,if you are going to use KT88
series of tubes for replacement.
3. Tube Sel. on the rear panel must be turned to
position EL34,if you are going to use EL34 series
of tubes for replacement.Bias adjustment
methods please refer to page 9.
Please turn off the amplifier when you are
turning the Tube Sel. Switch.
1 2 3 64 5 3
Diagram 2：CS-100A BACK
LEFT OUTPUT
RIGHT OUTPUT
INPUT
LINE2
LINE1LINE3PRE-IN TUBE SEL.
EL34
KT88
MODEL : CS - 100A
SER.NO.:
VACUUM TUBE INTEGRATED AMPLIFIER
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO.,LTD.
SUB OUT
OUTPUT
2
1

Top Panel
9
1.Be careful of the high temperature of the tubes during operation.
2.Replace the tubes carefully and correctly.
3.Tubes must be matched for well function.
NOTE:
A
Diagram 5
Bias meter during working
Note: When working normally,
the pointer should stay within
the A zone, still , it would move
for the voltage fluctuation.
Diagram 4
Bias meter when not working
Bias adjustment for the power tube:
Turn the Bias Selector Switch to its opposite direction without releasing it, adjust the corresponding Bias
Adjustment Swith with flat screwdriver, and inspect the Bias Meter on the top panel to make sure the pointer
keeps in the center. Bias adjustment for A1.A2,A3 and A4 are the same.After all have been adjusted, do it
one more time to make sure all the bias level of A1,A2,A3 and A4 are the same.
Sample of bias adjustment for power tube A1:
1. Turn the Bias Selector Switch A1 to its opposite direction without releasing it.
2. Adjust the corresponding Bias Adjustment Switch A1 with flat screwdriver until the pointer of the bias meter
keeps in the center. The same for A2, A3 and A4.
1.A1、A2、A3、A4、B1、B2、B3、B4:KT88/EL34
Turn the Tube SEL. to position KT88 on the rear panel, if you are going to use KT88 Tube.
Turn the Tube SEL. to position EL34 on the rear panel, if you are going to use EL34 tube.
2.Bias Adjustment (A1、A2、A3、A4、B1、B2、B3、B4)
Used to adjust bias of corresponding power tube (A1、A2、A3、A4、B1、B2、B3、B4)
3.V4、V5:12BH7EH Tube
4. (A1、A2、A3、A4、B1、B2、B3、B4)
5.V2、V3:12AU7EH Tube
6.V1:6SN7GTB Tube
7.BIAS Meter
Tube Indicator(
76
v1/6SN7
24
132
4
5
Diagram 3：CS-100A TOP

10
Remote Control
Installation
1. Place the remote control upside up. Screw the rear
cover open with the screwdriver.
2. Pull out the 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.
1. Triode/Ultralinear Selector
2. Audio Source Input Selector
3. Mute Button
4. Volume Control Selector
1
2
3
4
Effective Distance：about 6m
◆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.
NOTE:
A1
POWER
ON OFF
A2A4
A3B1
B2B4
B3
VOLUME
MI N M A X
SELE CTOR
VACUUM TUB E INTEG RATE D AMPLI FIER CS -100A
BIAS S ELECT OR
TR UL
LINE1PRE-I N
LINE2L IN E3

Carefully read and follow the manual for installation:
◆
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.
Do not place the machine near heat sources such as radiators, heat registers or other products that
Installation
11
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.
NOTE:
Tube Replacement
Tubes for the Machine
Tube Replacement
6SN7GTB
6SN7GT、6H8C、ECC32、6N8P
12AU7EH
12AU7、ECC82、E82CC、ECC802S
12BH7EH
12BH7
KT88
6550EH、KT88EH、6550、KT90、KT100、KT120
EL34
6CA7、EL34EH

12
Audio Connection
Connection method of CAYIN CS-100A with other audio equipments take pictures below for your reference.
Wrong connection
Right connection
NOTE:
• Please refer to the manual s of other connected equipments during the installation.
• Do not insert the power cord in to 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.
LEFT OUTPUT
RIGHT OUTPUT
INPUT
LINE2
LINE1LINE3PRE-IN TUBE SEL.
EL34
KT88
MODEL : CS - 100A
SER.NO. :
VACUUM TUBE INTEGRATED AMPLIFIER
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO.,LTD.
SUB OUT
OUTPUT
2
1
To audio
output terminal

Speaker Connection
13
Check the impedance of your speakers:
Attach the positive from your speaker to the 4 or 8 ohm terminal and the negative to the 0 ohm terminals
separately. If your speakers are 6 ohm, 4 ohm or 8 ohm (recommended) terminal is preferential and it would not
cause damage to the amplifier.Connecting the left and right speakers according to the guidance can make sure
of the acoustic fidelity.
Connection of speaker cables:
1. Unscrew the terminal knob
2. Insert the speaker cable
3. Screw the terminal knob
Connect the speaker cables with the amplifier after it is
well connected with the speakers.
Connect both of the speakers to make sure of the
acoustic fidelity.
Please notice the signal direction indication of the cables.
Do not mix up the positive and negative ends of speaker
cables or it will cause short circuit.
•
•
•
•
NOTE:
Banana plug Normal plug
LEFT OUTPUT
RIGHT OUTPUT
INPUT
LINE2
LINE1LINE3PRE-IN TUBE SEL.
EL34
KT88
MODEL : CS - 100A
SER.NO. :
VACUUM TUBE INTEGRATED AMPLIFIER
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO.,LTD.
SUB OUT
OUTPUT
2
1
RED
BLACK
RED
BLACK
SPEAKER（L）
SPEAKER（R）

14
Turning On
Before turning on the amplifier please make sure all connections are right and power supply is stable.
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 the
music you prefer.
•
•
•
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.
Small T i ps

15
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.
Troubleshooting
NOTE: is the registered trademark of Zhuhai Spark Electronic Equipment Co., Ltd.
Problem
Cause
Remedy
NO OUTPUT
Power Indicator is
OFF.
Power cord is not well-connected.
Check power cable connection or
power outlet connection
Main fuse is out.
Replace with the same type
and value fuse.
Troubles of inner parts or components.
Please contact with local
agents or our company.
Power Indicator is
ON.
Volume is at ZERO.
Turn up the Volume.
NO signal input.
Check the function of the
sound source.
Check the input selection and
switch to the proper input.
Sound Distortion
High input signal level.
Turn down the volume to
suitable position.
Noise output
Ground of input signal cable is open
or bad contact of the input signal cable.
Replace the input signal
cable with a new one.
Components or circuits are in trouble.
Please contact with local
agents or our company.
Sound field Positioning
is not so good.
Signal input cables or speaker
cables are wrongly connected.
Reconnect it as suggested in
the manual.
Malfunction of Remote
Control
Be disturbed.
Keep away from the source of
disturbance. Turn off and restore.
Low Battery.
Replace with new batteries.
Obstacles between the amplifier and
remote.
Remove the obstacles.

16
How to Install Vacuum Tubes
Pin No. 9 Pin No.1
How to Install 9-Pin Vacuum Tubes
12AU7(ECC82)、12AX7(ECC83)
Applicable vacuum tube:
、5BK7、12BH7、
12AT7(ECC81)、6922（ECC88) , etc. 9-Pin vacuum tubes.
Instructions to Change and Install the vacuum tubes:
To install a nine-pin vacuum tube, align the pins of the vacuum
tube with the holes of the tube socket and insert the tube
vertically up and down (as shown in the figure above).
Please note that when installing the nine-pin vacuum
tube, pay attention to the alignment of the vacuum tube
pins with the holes of the tube socket. Otherwise wrong
insertion will cause damage to the vacuum tube and
prevent the amplifier from working properly, which may
lead to failure of the amplifier.
Positioning Pin
How to Install 8-Pin Vacuum Tubes
Applicable vacuum tube:
KT150、KT170、KT88、6550、EL34、6V6、6SN7、6SL7、5AR4,
etc. 8-pin vacuum tubes.
Instructions to Change and Install the vacuum tubes:
To install an eight-pin vacuum tube, align the positioning pin of
the tube with the grooves in the positioning holes of the tube
socket, and install the tube by pulling up and down vertically
(as shown in the figure above).
Please note that when installing the eight-pin vacuum tube,
pay attention to the alignment of the vacuum tube positioning
pin with the positioning hole of the tube socket. Otherwise
wrong insertion will cause damage to the vacuum tube and
prevent the amplifier from working properly, which may lead to
failure of the amplifier.
How to Install 4-Pin Vacuum Tubes
Applicable vacuum tube:
300B、2A3 etc. 4-pin vacuum tubes .
Instructions to Change and Install the vacuum tubes:
To install a four-pin vacuum tube, please pay attention to the
thickness of differnet pins of the vacuum tube and the size of
the tube socket hole. Thick pin should be aligned with the big
hole, and the thin pin should be aligned with the small hole.
Install the tube vertically up and down (as shown in the figure
above).
Please note that when installing the four-pin vacuum tube,
pay attention to the thickness of differnet pins of the vacuum
tube and the size of the tube socket holes. Otherwise wrong
insertion will cause damage to the vacuum tube and prevent
the amplifier from working properly, which may lead to failure
of the amplifier.
Thin Pin Thick Pin
Big Hole
Small Hole
How to Install Big 4-Pin Vacuum Tubes
Applicable vacuum tube:
845、805、211 etc. 4-pin vacuum tubes.
Instructions to Change and Install the vacuum tubes:
To install the big four-pin vacuum tube, align the vacuum tube
positioning pin with positioning pin slot of the tube socket and
then rotate 45° clockwise to tighten. (As shown in the picture
above). To take out the big four-pin vacuum tube, turn the tube
45° counterclockwise and take it out upward after loosening.
Please note that when installing the big four-pin vacuum
tube, pay attention to the alignment of the vacuum tube
positioning pin with positioning pin slot of the tube socket and
then rotate 45° clockwise to tighten. It is strictly forbidden to
install the vacuum tube when the positioning pin is off or
missing. Otherwise wrong insertion will cause damage to the
vacuum tube and prevent the amplifier from working properly,
which may lead to failure of the amplifier.
Positioning Pin
Positioning Pin Slot