ALLNIC’s NEW ASRA RHPA-7500 headphone & integrated amplifier

NEWS
hi-fi+ Staff
Apr 16, 2026

16 April 2026: ALLNIC ASRA (RHPA-7500) is the new reference of high performance headphone amplifiers, equipped with true driving capability for modern high-end headphones.

It employs powerful 7558 pentode beam tubes in its new circuits together with a hand-built Permalloy transformer specially designed for ASRA amplifiers letting you enjoy ALLNIC’s exceptional music reproduction.

• Dual Output Architecture of Pentode (20W) and Triode (10W), smartly serving diverse choices of listeners
• High-purity, Nickel-based “Permalloy” Output Transformer, ensuring purity, accuracy and tonal richness in sound
• Versatile output choices and sufficient input capability

headphone outputs with a dedicated circuit for RAAL ribbon headphones, and speaker output
1x XLR / 3x RCA analogue inputs
• Optional upgrade of 41 step Constant Impedance Attenuator (CIA)

Experience Pure Musical Artistry

Technical Specifications

Category Details

Type: Tube headphone / integrated amplifier
Tubes: ECF x 2 / 12AU7 x 2 / 7558 x 4
Inputs: 3 pairs RCA unbalanced, 1 pair XLR balanced
Volume Control: Precision Potentiometer (optional 41-step Constant Impedance Attenuator)
Headphone Outputs: one 1/4″ TSR unbalanced, one 4-pin XLR (female), one RAAL direct drive 4-pin XLR (male)
Loudspeaker Outputs: one pair of binding posts
Frequency Response: 20Hz ~ 20KHz flat
Voltage Gain: +22dB Triode / +24dB Pentode
Optimum Headphone Impedance: 10Ω ~ 300Ω
Output Power: 20W Pentode / 10W Triode per channel
Maximum Input Voltage: 4V RMS
THD: 0.1% (1KHz, Output 1V)
S/N Ratio: -85dB (IEC)
Power Consumption: 80W
Dimensions: 355mm (W) x 445mm (D) x 140mm (H)
Weight: 12.0kg (net) / 16.4kg (shipping)
Price: £5,900 (standard), £7,200 (CIA version)