Musical Fidelity MX-HPA Balanced Headphone Amplifier

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MX-HPA is a fully-balanced headphone amplifier, by Musical Fidelity.

Years of experience in making high quality headphone amps have been distilled into the design of the MX-HPA. As a result, this fully-balanced headphone amp offers an awe-inspiring listening experience.

The MX-HPA technical performance is stunning. Typically, distortion from 20 Hz to 40 kHz is less than 0.005%. Signal-to-noise ratio is better than 120 dB (A-weighted). Frequency response is ruler-flat from 10 Hz to 20 kHz (-0.1 dB).

The MX-HPA is capable of a short-term peak of 10 watts (for one cycle) and has two gain positions: 18 dB (8X) and 24 dB (15X). Inputs are either balanced or single-ended. The MX-HPA will automatically convert single-ended inputs to balanced. The MX-HPA offers a genuinely fully-balanced design from beginning to end of the entire signal chain.


  • Fully balanced, studio design, purist headphone amplifier.
  • Incredible technical performance.
  • Will drive any headphone with ease.
  • Wide bandwidth: 10 Hz - 40 kHz at +0, -3 dB.
  • Very low noise.
  • Very low distortion: < 0.003 %, 20 Hz to 20 kHz.
  • Outstanding channel separation.
  • Powerful, muscular, output into 32 ohms.
  • Beautiful aesthetics and build quality.


  • Power: 1.8 Watts per channel into 8 Ohms (27dBW)
  • Max Output Voltage: 19 Volts RMS, 20 Hz to 20 kHz
  • Clipping: 54 Volts peak-to-peak, balanced
  • THD+N: > 0.005 % typical, 20 Hz to 20 kHz
  • Signal / Noise Ratio: > 120 dB A-weighted
  • Input Impedance: 50 k Ohms
  • Frequency Response: +0, –0.1 dB, 10 Hz to 20 kHz
  • Gain / LO Position (max): 18 db (8x)
  • Gain / HI Position (max): 24 dB (15x)
  • Inputs: 1 pair line level XLR (balanced) connectors, 1 pair line level RCA connectors
  • Outputs: 1 pair 3-pin XLR 1/4-in stereo jack combined sockets
  • Mains Voltages: 90-250 V AC 50-60 Hz universal worldwide supply
  • Consumption: > 0.25 Watts standby (Orange LED lit), 15 Watts maximum (Blue LED lit, full power output)
  • Dimensions WxHxD: 220 x 53 x 240 mm
  • Weight (unpacked / packed): 2.2 kg / 3.7 kg

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