Headphone Amps


Model no: HA-3 -Mk2
Retail store typical on-sale price $3,600 or up

Direct out-of-the-factory price C$1,880 Untitled Document [US$ 1504]

Pure Class A single-ended tube + UTC OPT headphone amp with preamp-output


This is our new headphone amplifier, use 2x 6SL7(default) / ECC35 / 5691 / 6SU7 / 6888 / 6SN7 / ECC32 / CV181/ 5692 and all compatibles. The following is the special features of this design

- MDE micro-dynamic extraction circuit design, those musical information hidden below the background noise easily surface out and become effortlessly reproduced, result in super musicality, tenderness and smoothness with airy open sound, very deep extended and punch bass as well

- All component-to-component and point-to-point hand wired

- Pure class A single-ended from input to output with high sonic perfomrance voltage regulation circuit

- Single-ended tube circuit driving a pair of NOS UTC high grade output transformer, least possible parts with most transparent , excellent airy open dynamics and superior vintage musical sound

- High quality high precision instrumental grade components

- Sweet and smooth tube sound with special 2W NOS vintage UTC output transformer, can drive most of the headphones from 16ohm to 600ohm with high loudness level

- Pre-amplifier output included for possible use this as high-end tube pre-amplifier with transformer coupling , super sweet and tender sound qulity which others cannot compete.

- Very smooth and sweet vocal or instrumental sound due to the ultimate high quality UTC output transformer

- true balanced XLR 4 pin socket for balanced headphone connection

- toggle switch for selection of 1/4" headphone + pre-out RCA or 4pin balanced XLR output

- Solid wood side panels for organic sonic signature, black or silver aluminum chassis as standard, any other chassis available upon request, additonal cost may apply.

For this same price,it is not possible to find another commercial available products which can sounds better than this headphone amplifier.


No. of inputs 1 set of RCA inputs  
No. of outputs 1 set of 1/4" headphone output + 1 set of 4 pin XLR headphone output + 1 set of pre-amp output
Freq response 10Hz - 50Khz (-3db)
S/N > 85 db
Output impedance 8ohm (suitable to drive headphone from 8ohm ~ 600ohm or higher
manufacturing hand-wired point to point
Tubes used 2 x 6SL7
Max. output voltage swing

1500 mVrms

1 year parts and labor warranty under normal operation conditions


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