Pre-amplifier of the English company Musical Fidelity.
As with other devices of the M series, the M1 HPA is made in a case of "half" width. Two analog devices and a digital source can be connected to it via the USB input. M1 HRA is able to integrate the equipment into a single system, working simultaneously as a pre-amplifier for the final amplifier, an amplifier for the main phones and a digital-to-analog converter for the PC.
The M1HPA works in the same way as the flagship models of the AMS 35i or AM S50 amplifiers in pure class A, which allows you to get simply incredible sound.
Incredibly low distortion (less than 0.008% in the entire frequency range) and an excellent signal-to-noise ratio of 109 dB can be considered simply outstanding, which definitely affects the sound quality in the best way.
The M1 HPA has a very low input impedance that allows you to work with a variety of headphones with perfect linearity and low distortion.
The Musical Fidelity M1HPA amplifier has three inputs: two analog RCA and one USB for connecting a computer and other media devices. Two headphone jacks on the front panel allow you to listen to music together.
M1 HPA can be used as an external DAC with the ability to listen to music from a home computer (in formats: CD, MP3, WAV, AAC, FLAC, etc.

Specifications

Output power: 1.1 W (at 32 ohms)
Output resistance: 1 Ohm
Output voltage: 5.2 V (RMS maximum)
Frequency range: 15 Hz - 75 kHz (-3 dB - max.)
Signal / noise ratio: 109 dB
Maximum harmonic distortion: 0.008% (10 Hz – 20 kHz)
Analog input: 2 stereo RCA pairs
Digital input: USB type "B" for computer or PDA (32-48kbps)
Output analog (unregulated): 1 stereo RCA pair
Output to external amplifier (adjustable): 1 stereo RCA pair
E. power supply 230 V, (50 Hz)
Power: 25 W (maximum)
Dimensions: – width: 220 mm, – height: 100 mm, – depth: 300 mm
Weight: 3.4 kg