m1 hpa

Upgrade your headphones' sound with Musical Fidelity's new amp

I've been a fan of Musical Fidelity from its beginnings in the early 1980s. The British company's original 30-watt-per-channel stereo A1 integrated amplifier was a hit with budget-minded audiophiles back in the day, and it also offered seriously expensive gear.

Musical Fidelity started making headphone amplifiers long before the current headphones craze started. The model we're looking at today is Musical Fidelity's pure Class A M1 HPA headphone amp ($799).

The HPA has very low output impedance (below 1 ohm), so Musical Fidelity claims it can "drive" any headphones with ease. The circuit is a fully discrete Class A design, with no op-amps in the audio path, so it's built like a small high-end power amp. The HPA has two inputs--line and USB--and there's a variable output, so the HPA can be used as a stereo preamplifier in a hi-fi system. It has two 6.3mm headphone jacks on the front panel.

Some previous generations of Musical Fidelity's styling were a little over the top for my taste, but the M1 HPA is understated and very classy. … Read more