Cayin HA-3A User manual

User's Manual
HEADPHONE AMPLIFIER
HA-3A
REV：1.0
POWER
STA NDARD
PHONES
4PIN BA L.
STD
4PIN BAL ANCE
L
M
H
IMPEDANCE
4.4 BAL . VOLUME
SOURCES
XLR RCA
MIN MAX
4.4 BALA NCE
HEADPHONE AMPLIFIER HA-3A
ON OFF

Table of Contents
Thank you for choosing Cayin HA-3A Headphone Amplifier
We have inserted protective foam inside the Vacuum Tube Cage in order to protect the vacuum tubes during
transportation. Please remove these foams before you connect the amplifier into your sound system. Fail to do
so might cause serious damage to the amplifier or disaster such as fire accident.
the amplifier. We suggest all customers read through this manual before they start to use the device.
We have prepared this user manual to help you understand the features and get familiar with the operation of
Table of Content ………………… …………………………………………………………
Package Contents ……………………………………………………….……………………………………
Product Features ……………………………………………………………………………………………...
Safety Precautions ……………………………………………………………………………………………
Specifications ……………………………………………………………………………………………….
Daily Care ……………………………………………………………………………………………………...
Warranty Service ………………………………………………………………………………………...
Preparation ……………………………………………………………………………………………….
Front Panel Functional Description …………………………………………………………………….
Rear Panel Functional Description ………… ……………………………………………………….
Top Panel Functional Description …………………………………………………………………...
Installation ………………………………………………………………………………………………...
Va c u u m Tube Su b s t itution … … … … … ……………………… … … … ……………………… … … . ..
Connect to Audio Equipment ………………………………………………………………………...
Connect to Headphones ……… … … … … … … … … … … … …… … … … … … … … … … …… … … . . .
Basic Operation ………………………………………………………………………………………….
M a in t e n an c e … … … …… … … … …… … … … …… … … … …… … …… …… … …… …… … …… …. . .
T r o u b l e s h o o t i n g … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … .
How to Install Vacuum Tubes…………………………………………………………………………
F o l l o w u s … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … …
……… …………
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Please place the box in upright position according to the marking of the package. Please examine the product
package before you open it, the package should be free from any physical damage or water stain. You should
find the following items when you open the package:
1.Cayin HA-3A x1
2.User's Manual x1
3.AC Power Cord x1
4.Spare Fuses:
①.External Main Fuse x2（～220V-240V：T1AL250V； ～100V-120V：T2AL250V）
②.External Fuse for high voltage x2（T125mAE250V ）
Recommendation
Please keep all packaging materials for future use as you may need to repackage the amplifier in the future.
Please fill in the product warranty card immediately and mail it to authorized dealer to safeguard your after-
sales service.
Note: Please make sure the AC voltage of your local power supply match the voltage information printed on the
back panel before you power up the amplifier. Incorrect input voltage setting will cause damage to the machine
or might even lead to serious household accident. Cayin reserves the right to refuse service or responsibility on
related instances. If the marked voltage is different from your local power supply voltage, please contact your
authorized dealer or Zhuhai Spark Electronic Equipment Co., Ltd.
Attention: the product package should include only the items in the list above.
This amplifier is designed, optimized and manufactured by factory designated components. Cayin reserves the
right to void the warranty of the product in case of unauthorized repair, modification or change to the product,
and we shall not responsible to any failure or damage caused by replacement of non-designated components.
Notice:
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Package Contents

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Product Features
◆
craftsman.
◆ Matched-pair custom build EI output transformers.
◆ In-house Designed Premium Toroid Power Transformer with high inductance and high efficiency.
◆ 22DE4 from RCA are used as Tube Rectifier providing stable and clean power supply to the
Voltage Amplification Stage.
◆ Multi-stage independent power supply voltage amplification employs independent regulator
design minimum ripple effect of power interference ensure outstanding audio performance, free
from any grain and hardness.
◆ Dedicated implementation of single-ended amplification circuit offer simple, pure and
devoted music presentation.
◆ JJ 12AU7/ECC82 are used for voltage amplification.
◆ JJ 6V6S are used for power amplification.
◆ Premium grade RealCap coupling capacitor improves resolving capability and soundstage.
◆ High quality Neutrik 6.35mm single-ended headphone, NIPPON DICS 4.4mm balanced
headphone, and Neutrik 4-pin balanced headphone are included.
◆ In -house designed output transformers provide three set of impedance matched outputs (High,
Mid, Low) from 8Ω to 600Ω at your direction.
◆ Two sets of line input XLR balanced RCA single-ended.
◆ Strong output power to match with wide range of headphone in the market.
◆ High performance Alps Potentiometer offers durable, high-precision Volume Control.
◆ Soft start function (about 60 seconds).
◆ Special shielding and anti-shock design.
◆ Design with an innovative circuit layout and highly effective shielding consideration, the
components will function at premium environment to ensure high quality audio performance form
the amplifier.
◆ Equipped with easily-installed tube cover for protection.
Point to point wiring with premium grade of wires. The entire circuitry is hand-wired by skillful

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◆ 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.
This symbol warns the users that uninsulated voltage within the unit may be sufficient to cause
electrical shock. It is dangerous to make any kind of contact with any part inside the unit.
This symbol alerts the users that important information concerning the operation and maintenance of
this unit has been provided. The information should be read carefully to avoid problems.
1.Unplug the power cord if you are not going to use the amplifier for an extended period of time, and
keep the machine in proper condition.
2.Tube amplifier will built-up its operation temperature after long hours of operation. Please keep the
amplifier at a well-ventilated environment and do not cover the amplifier or blocked the vents. Poor
ventilation will lead to excessively high operation temperature and can cause malfunction or fire.
3.To avoid damaging the amplifier, you must connect a source device to the input terminals before you
select that as the active input of your HA-3A.
4.To avoid damaging the amplifier, short circuit among the output terminals are strictly forbidden.
5.Do not attempt to service this product yourself. Opening the cover may expose you to electric shock or
other hazards.
6.Do not attempt to disassemble the machine. Cayin reserves the right to void the warranty of the
product in case of unauthorized repair, modification or change to the product. All service and
maintenance must be conducted by authorized service technician.
7.The amplifier must be keep away from water dripping or water splitting, do not place any objects filled
with liquids such as vases or some others on the top or around the amplifier.
8.Please disconnect power cable before you attempt to clean the machine. Please use soft clean cloth
to wipe clean the chassis, do not use volatile solution or corrosive to clean product.
9.Please handle with care, avoid tempering to the machine.
Safety precautions

Specifications
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ITEM
SPECIFICATIONS
【Rated Output】
STD
400mW+400mW（L）；600mW+600mW（M）；700mW+700mW（H）
4.4 BAL.
230mW+230mW（L）；350mW+350mW（M）；400mW+400mW（H）
4PIN BAL.
600mW+600mW（L）；750mW+750mW（M）；850mW+850mW（H）
【 】Frequency Range
18Hz～30kHz ±3dB
【 】TH+D
0.2% (1kHz, 200mW)
【 】Sensitivity
300mV～480mV
【S/N Ratio】
100dB （A-Weighted）
【 】Headphone Impedance
L：8~64Ω； M：65~250Ω； H：251~600Ω
【Headphone Connectors】
6.35mm x1 ；4.4mm BALANCEx1； 4pin XLR x1,
【Input Impedance】
40kΩ
【Input Connector】
XLR,RCA
【Tube used】
JJ 12AU7/ECC82 JJ 6V6S RCA ×2、 ×2、 22DE4×1
【Dimension】
306mm 260mm 170mm× ×
【Net Weight】
12KG
【Fuse】
～220V-240V： ～100V-120VT1AL250V； ：T2AL250V
【External Fuse for 6V6】
T125mAE250V
【Power Consumption】
80W
【Working Condition】
Temp Humidity：0℃～40℃ ：20%～80%
【Storage Condition】
Temp Humidity：-20℃～70℃ ：20%～90%

Warranty Service
1.The Product is warranted for a period of twelve (12) months from the date of original purchase (the “Warranty
Period”). Replacement Products are warranted for the remainder of the original twelve (12) month warranty
period. Six-month warranty on stock vacuum tubes.
2.The defective product must be returned to our authorized agent or Zhuhai Spark Electronic Equipment Co.,
Ltd (the “Company”) for service. You must receive approval from our authorized dealer or the “Company”
before you send out the defective product.
3.Do not attempt to disassemble the machine without prior approval of the “Company” otherwise we reserves
the right to void the warranty of the product
Daily Care
Notice:
◆
◆
Please use soft clean cloth to clean the chassis regularly
Do not use volatile solution or corrosive cleaning product or pre-treated cloth
The information in this manual is subject to change without prior notice.
NOTE:
6
POWER
STA NDARD
PHONES
4PIN BA L.
STD
4PIN BAL ANCE
L
M
H
IMPEDANCE
4.4 BAL . VOLUME
SOURCES
XLR RCA
MIN MAX
4.4 BALA NCE
HEADPHONE AMPLIFIER HA-3A
ON OFF

Precautions
◆Connect power cord after all equipments are well connected.
◆It is normal that the transformers will emit heat when the amplifier is used for long hours
◆Please unplug the power plug if you won’t use the amplifier for a long time
◆Please make sure the AC voltage of your local power supply match the voltage of the amplifier. Cayin
will not be responsible for the damage or accidents such as fire caused by incorrect input voltage
Attention:
Connect to AC
Power Supply
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Connecting AC Power Cord
Connect the signal cables first and then insert the power cord into the power socket.
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO., LTD.
RISK OF ELECTRIC SHOCK
CAUTION
DO NOT OPEN
-HA 3A
HEADPHONE AMPLIFIER
RCA
XLR
SOURCES
FUSE
1:G 2:+ 3: - 1:G 2:+ 3 :-
6V6 TUBE
T AL250V1
80
230 50

Front Panel Functional Description
“down” the button to turn on the amplifier, Press
again the button will resume to original position and
the amplifier will power off.
②. : Indicate the working status: The
indicator will remain always on when the amplifier is
in regular operation
③.Headphone Output Selector:
can select the suitable type of headphone output.
HA-3A offers three types output.
④.STANDARD: Output for headphones terminated in
6.35mm TRS connector
⑤.4.4 Balance Output：4.4 balance output for
headphone terminated in 4.4mm connector.
①.
Power Indicator
With the switch you
Power On/Off: Turn on and off the amplifier. Press
⑦.IMPEDANCE: Select the most desirable: impedance-
matched output from the amplifier, three options were
offered: (L:8~64Ω; M:65~250Ω; H: 251~600Ω)
⑧.VU meter: monitor output level of the amplifier
⑨.SOURCES: select balanced or single-ended input
⑩.
.
⑥.4PIN BALANCE: Output for headphones terminated
in 4pins XLR connector
Working State 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.
⑪Volume Knob
Used to control volume
◆
adapter (not included in the package).
◆Listening through headphones at a high volume for extended periods of time can result in hearing
impairments.
◆Please do not use mono (TS) phone plug with this amplifier as this might cause serious damage
such as short circuit in the amplifier.
◆Please unplug the power plug from AC power circuit if the amplifier is not used for a long time
If your want to connect a 3.5mm terminated headphone to the amplifier, you need a 3.5mm to 6.3mm
Attention:
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Diagram 1：HA-3A Front Panel
Polarity Diagram for 4 PIN XLR
Balanced Headphone Jack
Polarity Diagram for 6.35mm
Headphone Jack.
L-
R-
L+
R+
Polarity Diagram for 4.4mm
Balanced Headphone Jack
12
POWER
STA NDARD
PHONES
4PIN BA L.
STD
4PIN BAL ANCE
L
M
H
IMPEDANCE
4.4 BAL . VOLUME
SOURCES
XLR RCA
MIN MAX
4.4 BALA NCE
HEADPHONE AMPLIFIER HA-3A
ON OFF
46
37
58910 11

Rear Panel Functional Description
Please make sure the AC voltage of your local power supply match the voltage of the amplifier. Cayin
will not be responsible for the damage or accidents such as fire caused by incorrect input voltage
①.
Connect a balanced audio input to the
amplifier. Please make sure the left and
right channel is connected correctly
②.Single-ended input (RCA)
Connect a single-ended audio input to the
amplifier. Please make sure the left and
right channel is connected correctly
③.External Fuse for high voltage
（T160mAL250V）
④.AC Power Input with Fuse Holder: please
replace fuse with the same specification
Balanced input (XLR)
Diagram 2: HA-3A Rear Panel
Attention:
9
T1AL250V
RCA
XLR
SOURCES
珠海斯巴克电子设备有限公司制造
ZHUHAI SPARK ELECTRONIC EQUIPMENT CO., LTD.
用户请勿打开机箱
内部有高压
警 告
名 称 ：
型 号 ：HA 3-
编 号 ：
真空管耳机功率放大器
80
FUSE
1:G 2:+ 3: - 1:G 2:+ 3 :-
6V6 TUBE
1342