Cayin HA-2A: Audiophile Renovation with NOS Tubes

Discover the Cayin HA-2A, Cayin's new tube amplifier, which marks a milestone in the HA series by being the first to incorporate vintage NOS (New Old Stock) tubes. This exceptional design not only reveals dual VU meters, but also offers versatile connections with 4pin XLR (BAL), 4.4mm (BAL), and 6.35mm (SE) ports on its front panel.

Superior Sound Quality with NOS Valves

The HA-2A uses a total of five valves, including the RCA 17AX4GT rectifier valve, which enriches the listening experience with a unique harmonic richness and a warm, smooth tone. Amperex preamp and power tubes, such as the ECF82/6U8 and 17BF11, are carefully selected and matched to ensure maximum sound quality.

High Performance Design

This amplifier distinguishes itself by its wide frequency response from 20 Hz to 50 kHz (+/- 3 dB), ensuring an exceptional sound range. The HA-2A's point-to-point construction optimises the signal path, improving transparency and audio refinement.

Advanced Connectivity and Versatile Adjustments

Equipped with dual RCA and XLR inputs, the HA-2A also offers balanced headphone outputs in 6.35mm, 4-pin XLR and 4.4mm formats. High, medium and low impedance adjustment modes allow for a perfect match with headphones of varying impedances and power requirements.

Compact and Compatible Design

Weighing only 10kg and featuring a compact design, the HA-2A is ideal for desktop use and integrates seamlessly with other Cayin devices such as the iDAP-8, iDAC-8 and iHA-8, forming a coherent, high-fidelity audio system.

Technical specifications:

Inputs: XLR x2, RCA x2

Vac:

Output: Amperex 17BF11 x 2

Driver: Amperez ECF82/6U8 x 2

Rectifier: RCA 17AX4GT

Dimensions: 270 mm x 247 mm x 143 mm 

Weight: 10kg

Fuse: 

220V-240V: T500mAL250V

100V-120V: T125mAE250V

Output Tube Fuse: TL125mAE250V

Power consumption: 60W

Temperature

"Working: 0º-40º; Humidity: 20%-80%.

"Storage: -20º-70º; Humidity: 20%-90%.

Headphone output specifications

4 pin XLR (BAL): 800mW (L); 900mW (M); 1000mW (H)

4.4mm (BAL): 200mW (L); 300mW (M); 270mW (H)

6.35mm (SE): 330mW (L); 550mW (M); 750mW (H)

Frequency response: 20Hz-50kZ +3dB

TH+D: 0.2% (1kHz, 100mW)

Sensitivity: 450mW-600mW

S/N Ratio: 100dB (A-Weighted)

Headphone Impedance: L: 8-64 Ohms; M:65-250 Ohms; H:251-600 Ohms

Headphone connector: 4 pin XLR x 1, 4.4mm x 1, 6.35mm