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Delivery time approx. 1-2 weeks.
Six years later, the legacy of the HA-6A lives on
The HA-6A MK2 is the long-awaited second generation of Cayin's popular HA-6A. Featuring a novel dual-chassis architecture, it physically separates the power supply from the amplifier circuit to minimize magnetic interference. Thanks to its fully hand-wired point-to-point construction, the HA-6A MK2 offers pure signal transmission, while retaining the rich, emotive sound for which Cayin is known.
Tube configuration
The heart of the HA-6A MK2 is made up of carefully selected and matched vacuum tubes, including:
- 2 × JJ GZ34/5AR4 (high-voltage tube rectification)
- 2 × JJ ECC82/12AU7 (Voltage amplifier stage)
- 2 × Genalex KT88 (Single-ended Class A power amplifier)
Each tube was selected for its acoustic properties, stability, and durability. The power tubes operate in a pure single-ended Class A configuration, offering excellent linearity.
The amplifier was specially designed for tube enthusiasts and offers wide compatibility with various tubes - it supports power tubes such as 6550, KT66, KT150 and many more.
Two operating modes: Triode and Ultralinear
To adapt the sound to different music genres and listening preferences, the HA-6A MK2 has two selectable operating modes:
- Triode mode (TR): Soft, elegant, and naturally warm. Ideal for vocals, jazz, and acoustic music.
- Ultralinear mode (UL): Extended dynamics, tighter bass and improved control – suitable for orchestral or film recordings.
The switch is easily accessible via the front panel and allows instant listening comparisons in real time.
Versatile connectivity with preamplifier function
The HA-6A MK2 has two sets of input connectors:
· XLR balanced input
· RCA unbalanced input
Comprehensive selection of headphone outputs
Ÿ 6.35 mm asymmetrical
Ÿ 4.4 mm symmetrical
Ÿ 4-pin XLR balanced
Suitable for a variety of headphone types and connection preferences.
In addition to its headphone amplifier functions, it has an RCAPreamplifier outputso that it can function as a high-quality tube preamplifier when connected to a separate power amplifier or active speakers.
Dual chassis design
To maximize performance, the HA-6A MK2 features a separate power supply and amplifier chassisThis architecture minimizes magnetic interference.
- Special EI output transformers and a special toroidal transformer were developed specifically for the HA-6A MK2.
- The shielding of the internal components and the optimized module layout ensure low noise.
Remote control and protection functions
- High-quality aluminum remote control for volume and mute functions included.
Technical data
Output power (4-pole balanced)
UL: 4500 mW + 4500 mW
TR: 3000 mW + 3000 mW
Output power (4.4 mm symmetrical)
UL: 1000 mW + 1000 mW
TR: 650 mW + 650 mW
Output power (6.35 mm unbalanced)
UL: 3500 mW + 3500 mW
TR: 2300 mW + 2300 mW
Frequency response
10 Hz – 26 kHz (±3 dB)
THD
0.3% (1 kHz at 200 mW)
Signal-to-noise ratio
104 dB (A-weighted)
Impedance matching
8Ω–600Ω (L/M/H selectable)
Preamplifier output voltage
max. 6 V
Preamplifier gain
20 dB
Tube assembly
ECC82 ×2, KT88 ×2, GZ34 ×2
Entrances
1 × RCA, 1 × XLR
Preamplifier output
1 × RCA
Power consumption
130 W
Dimensions (W × D × H)
Power supply: 160 × 297 × 185 mm/Amplifier: 285 × 297 × 185 mm
Net weight
Power supply: 8.2 kg/Amplifier: 11.2 kg
