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 Cayin HA-300 MK2 Integrated Tube Amplifier 


The Cayin HA-300MK2 is a high-end tube amplifier that exemplifies excellence with its use of Direct Heated Triode (DHT) tubes, known for their dynamic and transparent sound. This minimalist approach is highly appreciated by audiophiles for its stellar performance.


Equipped with a matched pair of Gold Lion Genelex PX300B tubes, the HA-300MK2 delivers reliable performance with rigorous testing standards, offering a natural, sensible, and realistic sound signature with impressive frequency extension. Utilizing a single triode vacuum tube, the SET amplifier provides amplified output with seamless musical signal integration. The 2-stage amplification, featuring Tung-Sol 6SN7GTB tubes, ensures a linear performance with low noise and high reliability, producing a super linear and natural sound that is a hallmark of classic tube combinations.


The amplifier’s power supply features a 2-box design to offer clean, low-noise power. It includes NOS RCA 22DE4 rectifier tubes for optimal performance and a high-inductance toroidal power transformer designed and wound in-house for superior performance. The HA-300MK2 uses matched Tung-Sol 6SN7GTB driver tubes and Genelex PX300B output tubes, with NOS RCA 22DE4 rectifier tubes ensuring minimal interference and optimal performance.


The transformer-coupled design drives proprietary output transformers to support both headphones and speakers, offering balanced and single-ended outputs. In-house designed EI transformers ensure natural and realistic sound across the frequency range. The amplifier includes 6.3mm single-ended, 4.4mm balanced, and 4-pin XLR balanced headphone outputs, optimized for a variety of headphones, delivering powerful and authoritative sound with up to 8W per channel in Class A output.


Professionally precise controls are ensured with a JRC MUSE72320V volume controller and an ALPS balanced potentiometer with a 41-step encoder. The HA-300MK2 also features anti-interference measures, including silica gel shock absorbers and an effective circuit layout, along with a 60-second startup delay for enhanced circuit protection. A vacuum tube shielding cage provides additional protection.


The amplifier boasts a 13.5mm brushed aluminum-magnesium alloy front panel, anodized for durability and scratch resistance, making the Cayin HA-300MK2 a blend of meticulous design and superior performance, bringing your music to life with clarity and depth.

Cayin HA-300 MK2 Integrated Tube Amplifier

  • Input Connectors: XLR x 2, RCA x 2


    • Output: Genalex PX300B x 2

    • Driver: TUNG-SOL 6SN7GTB x 2

    • Rectifier: RCA 22DE4 x 4


    • Amplifier: 286mm x 368mm x 210mm

    • Power Supply: 150mm x 345mm x 210mm


    • Amplifier: 19kg

    • Power Supply: 10kg


    • ~220V-240V: T1.6AL250V

    • ~100V-120V: T3.15AL250V

    • T100mAE250V

    Output Tube Fuse: T100mAE250V

    Power Consumption: 185W

    Operating Conditions:

    • Temperature: 0°C~40°C

    • Humidity: 20% - 80%

    Storage Conditions:

    • Temperature: -20°C~70°C

    • Humidity: 20% - 90%

    Headphone Output

    Rated Output (per channel):

    • 4pin XLR (BAL):  [Low (L): 2000mW]  [Medium (M): 2400mW]

    [High (H): 6000mW]

    • 4.4mm (BAL):  [Low (L): 1400mW]  [Medium (M): 2200mW]

    [High (H): 5400mW]

    • 3.5mm (SE):  [Low (L): 1200mW]  [Medium (M): 2200mW]

    [High (H): 5000mW]

    • Frequency Range: 10Hz~45kHz ±3dB

    • THD+N: 1% (1kHz)

    • Sensitivity: 200mV~650mV

    • S/N Ratio: 100dB (A-Weighted)

    • Headphone Impedance: [Low (L): 8~64Ω] [Medium (M): 65~250Ω]   [High (H): 251~600Ω]

    • Headphone Connectors: 4-pin XLR x 1, 4.4mm x 1, 6.35mm x 1

    Speaker Output:


    • Rated Output: 8W + 8W

    • Frequency Range: 10Hz~40kHz ±3dB

    • THD+N: 1% (1kHz)

    • S/N Ratio: 95dB (A-Weighted)

    • Input Sensitivity: 400mV

    • Output Impedance: 4Ω~8Ω

    • Input Impedance: 50kΩ



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