HA-6A MK2

The Cayin HA-6A MK2 is a single-ended Class A headphone amplifier powered by KT88 output tubes. The driver tubes amplify signal voltage under highly linear conditions, while the K188 tubes deliver complete, undivided output for maximum musical integrity. Cayin designed the gain circuitry, independently adjusting the operation current of each vacuum tube stage and pairing it with a pure, stable power supply, ensuring the HA-6A MK2 fully expresses the rich tonality and musical depth that single-ended Class A design is renowned for.

Delivering 3000mW (TR) or 4500mW (UL) per channel, the HA-6A MK2 powers a wide range of headphones with both precision and musicality.

Engineered for Pure Performance

Designed for uncompromising sound quality, the HA-6A MK2 features a dual-chassis design that isolates the power supply for lower noise and greater clarity. Each amplification stage is independently regulated to minimise interference, while a custom silver-plated copper umbilical cable ensures efficient, lossless current delivery.

Upgraded Amplification Circuitry

The headphone amplification circuit has been upgraded with high-quality components, delivering breakthroughs in both core performance and user experience. With wide compatibility and enhanced driving power, it can accommodate and power a greater variety of headphones. 

Tube Complement

High-Voltage Rectifier

Equipped with two JJ GZ34 / 5AR4 rectifier tubes, delivering strong and stable current output. 

Voltage Amplification Stage

Driven by two JJ 12AU7 / ECC82 dual triodes, providing enhanced signal gain while preserving fine detail and layering. 

Single-Ended Class A Power Amplification

Utilizing a matched pair of Genalex KT88 tubes, faithfully reproducing the natural tonality of music with rich, engaging sound. 

Impedance-Matched Headphone Output

In-house output transformers provide impedance-matched outputs for low (864Ω), mid (65250Ω), and high (251600Ω) loads, ensuring natural, balanced sound. With 6.35mm, 4.4mm, and 4-pin XLR outputs, it delivers up to 4500mW per channel for demanding headphones, while the optimized 4.4mm jack suits sensitive IEMs with reduced output and improved S/N performance.

Additional Features

Dual Operation Mode

Change your sound signature with the flip of a switch. Triode mode offers a smooth sound with rich harmonics and lush, holographic imaging. Ultralinear Mode improves the dynamics and punch, with a clean, authoritative sound and enhanced extension on both ends of the frequency spectrum.

Volume Control

A Premium Japanese ALPS potentiometer delivers smooth, precise, and reliable volume adjustment.

More Than a Headphone Amp

The HA-6A MK2 introduces a dedicated PRE-OUT output, elevating it from a headphone amplifier into the centerpiece of your audio system. Connect it to external power amplifiers or active speakers to create a refined desktop or small-scale Hi-Fi setup.

In-House Developed Transformers

Cayin has always insisted on developing high-quality transformers in-house. The custom toroidal power transformer uses a high-purity copper winding design, which produces lower magnetic noise compared to standard transformers. 

AudioCapX Coupling Capacitors

Accurately isolate DC current, improving the precision and stability of audio signal transmission.

High-Grade Electrolytic Capacitors (Japan)

Provide fast power delivery and filter out ripple current, reducing sonic coloration. 

60-Second Soft Start Function

Ensures a silent startup with a delayed warm-up, allowing the tubes to fully stabilize and deliver the best sound performance. 

Specifications

• Dimensions
• Power Supply: 160 x 297 x 185mm
• Amplifier: 285 x 297 x 185mm 
• Net Weight
• Power Supply: 8.2KG
• Amplifier: 11.2KG

In the Box

• Cayin HA-6A MK2 power supply + amplifier
• Tubes
• Power cable
• User manual

Manufacturer Site

• Cayin