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Hammertone Audio distributes Allnic Audio Electronics and ZL Technology cables

HPA-3000 GT



The HPA-3000 GT is Allnic Audio’s output transformer coupled, stereo headphone amplifier. The HPA-3000 GT has a voltage gain of +28dB, and a maximum output of three (3) watts. It works best with headphones having an impedance of from 30 to 600 ohms.

Key Features

The HPA-3000 GT has the following features:

  • Works best with headphones having an impedance of from 30 to 600 ohms
  • High-quality, NOS tubes
  • Pure Class A operation
  • Headphone output: The HPA-3000 GT is equipped with two (2) headphone output ‘jacks’ and two (2) four (4) pin XLR All work for both low and high impedance headphones
  • Pre-amp output: The HPA-3000 GT is equipped with one (1) pair of RCA pre-amp outputs, whose impedance is around 10 ohms; this extremely low value provides very powerful driving capability with the widest frequency range to a connected amplifier
  • Volume control: The HPA-3000 GT’s volume control is the large knob in the center of front panel. It rotates clockwise (gain increased) and counter-clockwise (gain reduced) – No remote control
  • As are all Allnic Audio products, the HPA-3000 GT is fully RoHS (EU Reduction of Hazardous Substances regulation) compliant in construction and materials

Technical Specifications

  • Inputs: One (1) pair unbalanced (RCA), One (1) pair balanced (XLR)
  • Headphone Output: Two (2) one-quarter inch (1/4”), Two (2) XLR
  • Pre-out: one (1) pair RCA
  • Frequency Response: 20Hz ~ 20KHz (±0.3db)
  • Voltage Gain: +28dB
  • Optimum Headphone Impedance: Low under 50 ohms, High under 600 ohms
  • Output Wattage: Three (3) watts
  • Maximum Input Voltage: Ten (10) volts RMS
  • THD (Total Harmonic Distortion): Less than 0.03% (1KHz, Output 1V)
  • S/ N Ratio: -63db (CCIR, 1KHz)
  • Power Consumption: 48 Watts
  • Tubes: 6EM7 x 2
  • Fuse: AC 2A, 250V
  • Dimensions: 240mm x 330mm x 175mm (W x D x H) (9.5 x 13 x 6.9 inches)
  • Weight: Unpacked: 10 kg

Product Support

Coming Soon…


HPA-3000 GT Audio (S.Korea’s magazine) review

HPA-3000 Fullrange (S.Korea’s webzine) review

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