Cayin HA-3A, Headphone Amplifier: with Warm Sound Signature Tube Amplifier (HA 3A, HA3A)
Cayin HA-3A Tube Headphone Amplifier
A Smaller Tube Amplifier with a Big Sound
According to Cayin, the key component in the design of the Cayin HA-3A Tube Headphone Amplifier is “First-Class Engineering Plus Refined Styling”, by this they mean that their decades-long experience in audio manufacturing is matched with the carefully selected performance-based components that went into the development of the HA-3A tube amp. The entire circuitry of the HA-3A is hand-wired by skillful craftsmen, while Cayin in-house designs, winds, and uses premium high-inductance, high-efficiency power transformers with a reinforced shielding design to minimize interference and noise, and the chassis and transformer pots are treated by Cayin’s proprietary 14-round crafting process. An “Anti-Interference Design” consisting of special shielding and an anti-shock design to effectively remove microphonics is employed along with a set of three 39x18mm XL shock-absorbing aluminum foot pads to provide a firm and stable amplifier placement at any hard flat surface with two in the rear to help handle the extra weight of the transformers.
The power supply of the HA-3A uses an RCA 22DE4 as a rectifier tube which minimizes interference and provides clean power to the amplification circuit. Cayin uses only carefully selected Hand-Matched Vacuum Tubes (matched pair JJ 12AU7/ECC82 driver tubes and matched pair 6V6EH Electro Harmonix output tubes) in their two-stage single-ended circuit. Both the single-ended and balanced headphone outputs are transformer-coupled using a secondary winding of the output transformer to provide an alternative phase and compose a balanced output, enabling balanced driving from a single-ended vacuum tube amplification circuit.
Dual JJ 6V6S or EH 6V6 Output Tubes
Dual JJ 12AUT(ECC82) Driver Tubes
RCA 22DE4 or RCA 25AX4GT as Rectifier Tube
Three Levels of Headphone Impedance:
L: 8~64 M: 65~250 H: 251~600
Three Headphone Output Ports:
6.35mm Single-ended
4.4mm Balanced (optimised including high sensitivity headphones)
4-Pin XLR Balanced
Dual Input Ports:
XLR Balanced
RCA Single-ended
Built with craftsmanship:
In-house Designed Premium Toroidal Power Transformers.
The chassis and transformer pots are treated by 14 rounds of crafting process, the high gloss finishing endows a refined and delicate texture.
Point-to-point wiring by skilled craftsman.
High Performance ALPS Volume Control.
Three impedance settings: Low, Mid, High