Cayin HA-1AMK2 User Manual
VO L U ME
MI N
MA X
CD
AUX
8-32Ω
33-64Ω
65-150Ω
151-300Ω
600Ω
HA-1 2A MK
INP UT
SEL EC TO R
POW ER
PHO NE S A
VAC UU M TU BE H EA DP HO NE A MP LI FIER HA-1A MK2
ON
IMP ED AN CE
SEL EC TO R
OFF
PHO NE S B
VACUUM TUBE HEADPHONE AMPLIFIER
User's Manual
Thanks for choosing CAYIN HA-1A MK2 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 Headphone
Table of Contents
Table of Contents
Package Contents…………………………………………………………………………………………………………2
Product Features………………………………………………………………………………………………………2-3
Safety Precautions……………………………… …………………… …………………………………………………3
Specifications………………………………………………………………………………………………………………4
Maintenance… …………………………………………… ……………………………… ………………………………5
Warranty Service………… ………………… ………………… ………………… ………………… ………………… …5
Precautions…………………………………………………………………………………………………………………6
Front Panel…………………………………………………………………………………………………………………7
Rear Panel…………………………………………………………………………………………………………………8
Installation…… … …………… … …………… … …………… … …………… … …………… … …………… … ………9
Tube Replacement ……………… … ……………… … … ……………… … ……………… … … ……………… … …9
Audio Connection………………………………………………… ………………… ………………… ………………10
……………………………………………………………………………………………… 1…………
Turn on……………………………………………………………………………………………………………………11
Small Tips…………………………………………… …………… …………… …………… …………… …………… …11
Troubleshooting …… ……… ……… …………………………………………………………………… ……… ……12
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NOTE:
CAYIN HA-1A MK2 Vacuum Tube Headphone 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.
Package Contents
Please carefully check the package first and then open it.
Package contents include:
1. CAYIN HA-1A MK2 1 piece
2. Users' Manual 1 piece
3. Power cord 1 piece
4. Main Fuse 4 pieces(100V～120V:T1AL250VX2; 220V～240V:T500mAL250VX2）
Recommendation:
Keep all packing materials for future use .
NOTE:
Please make sure the AC voltage s elector on the rear panel is setup correctly for your local p ower supply
voltage . Too low or too high volta ge may cause problem. Please contact our company or our loc al age nt
if you've found improper volt age.
All other parts except above are not included.
Product Features
◆Deploy Electro-Harmonix EL84EH (Russian) as power tube
◆Deploy 12AU7 as signal tube
◆Deploy NOS 12DT5 as power regulation tube
◆Deploy premium grade Z11 EI-core as power transformer
◆Deploy wide-band premium grade Z11 EI-core output transformer, the unique layer winding
technique offer high quality and versatile at the same time
◆Deploy premium grade ALPS-27 rotary potentiometer as volume control
◆Specially designed 5 steps output impedance selection offers precise matching to most
headphones available on the market
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Product Features
◆Designed with commonly available vacuum tubes, allow tube rolling with compatible tubes
from different brands and dates, users can fully appreciate the strength of tube amplification.
◆Dedicated implementation of single-ended amplification circuit offer simple, pure and
devoted music presentation.
◆Extensive Power Management consideration with separated power supply to signal and
voltage amplification, using power regulation tube further isolate the two stage power supply
from each other, this can safety the components are operated at the best possible condition,
and the audio performance will be significantly enhanced.
◆Equipped with Pre-out connection, making the amplifier can function as an audiophile grade
tube preamp with paired with an active speaker or a power amplifier.
◆Two sets of Neutrik 6.35mm stereo headphone output work in parallel, Phone A set for
Dynamic presentation, Phone B set for Soft presentation.
◆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.
◆Optimised air duct cooling system to disperse heat out of the amplifier effectively, ensure the
amplifier can work stably for long hours.
◆Deploy 3 independent supporting foot to optimize shock absorption and improve audio
performance.
Safety precautions
1.Unplug the power cord if you ar e not going to use th e amplifier for an extended p eriod of time , and keep
the machine in proper conditi on
2.The machine wil l become hot during operation, Please keep the amplifier at a w ell-ventilated
environment and do not cover th e amplifier with anything.
3.Do not operate the ampl ifier when the output is open or shorted, wil l cause serious damage to the
amplifier and associated eq uipm ent.
4.Do not atte mpt to service this pro duct yourself. Opening the cover may expose you to electric shock or
other hazards.
5.Do not attempt to disassembly the machine, all service and maintenance must be conducted by
authorized service techni cian.
6.The amplifier must be ke ep away from water dripping or wate r splitting, do not place any o bjec ts filled
with liquids such as vases or som e others on the top or around.
7.Please disconnect power cable before you attempt to clean the machine. Please use soft clean cloth to
wipe clean the chassis, do not us e volatile solution or corrosive cleaning product.
8.Please handle with care, do n ot drop the machine and avoid shock or collision with other hard su bjects.
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