Musical Fidelity MX HPA Balanced Headphone Amplifier

Discount 6% List price: £415.83
We are able to ship to United States - View Rates


MX-HPA - Overview

The incredible studio reference MX HPA fully balanced headphone amp has been a labour of love for everybody at Musical Fidelity. As some of you may have noticed we have been making headphones for some time and have always been great headphone fans. Although the M1 HPA is very good we wanted to make something which was incredible.

The MX HPA fully balanced headphone amp is the result of decades of experience of making high quality headphone amplifiers. Relatively, the MX HPA has about the same performance into headphones as the incredible Titan has into loudspeakers. That is; awe inspiring, incredible, limitless and any other hyperbole you can imagine. It is really incredible.

MX-HPA - Design and Build

The MX HPA’s technical performance is stunning.  Typically distortion from 20 Hz to 40 kHz is less than 0.005%.  This is serious stuff.  Signal noise ratio is better than 120dB (‘A’ weighted).  Needless to say frequency response is ruler flat from 10 Hz to 20 kHz (-0.1dB). 

It is capable of a short term peak of 10 watts (for one cycle).  It has 2 gain positions; 18dB (8X) and 24dB (15X).  Inputs are either balanced or single ended.  It willautomatically convert single ended inputs to balanced. The MX HPA is genuinely fully balanced from beginning to end.



  • Power 1.8 Watts per channel into 8 Ohms (27dBW)

  • Maximum output voltage 19 Volts RMS, 20Hz to 20 kHz

  • Onset of clipping (54 Volts peak-to-peak) balanced

Line input

  • THD+N >0.005% typical, 20Hz to 20 kHz

  • Signal / noise ratio >120dB ‘A’-weighted

  • Input impedance 50k Ohms

  • Frequency response +0, –0.1dB, 10Hz to 20 kHz

  • Gain, LO position (volume max) 18db (8x)

  • Gain, HI position (volume max) 24dB (15x)


Line level inputs

  • 1 pair line level XLR (balanced) connectors

  • 1 pairs line level RCA connectors

Headphone outputs

  • 1 pair 3-pin XLR/¼” stereo Jack combined sockets

Power requirement

  • Mains voltages 90-250VAC 50-60Hz universal worldwide supply

  • Consumption >0.25 Watts standby (Orange LED lit)

  • 15 Watts maximum (Blue LED lit, full power output)


  • Unit only, unboxed 2.2 kg (5 lbs) In shipping carton 3.7 kg (8¼ lbs)


  • Width 220 mm (8⅔”)

  • Height (including feet) 53 mm (2”)

  • Depth (front to back) inc. terminals 240 mm (9½”)

Delivery and Returns

Your country is set to: United States
Shipping method Delivery Time Cost

Please be advised that we may upgrade your delivery to a better service if we deem it appropriate to designated destinations at no additional cost. Please view our returns policy.
*Quoted delivery times are estimates and apply to normal working days for in stock items.


Musical Fidelity

Worldwide Shipping

Payment Methods

  • Paypal
  • Visa
  • Mastercard
  • All other major credit/debit cards

Our Advantages

  • Worldwide shipping, fast, insured & tracked. Details
  • Clear, simple returns policy. Details
  • UK-based company, established since 1985. Details
  • Visit our London showroom to demo a huge selection of headphones, earphones & portable players. Details