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Musical Fidelity

Musical Fidelity M3si Integrated Amplifier

Musical Fidelity M3si Integrated Amplifier

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Regular price $1,679 In stock now!
Regular price $1,679 Sale price $1,679 In stock now!
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Musical Fidelity M3si Integrated Amplifier


In my experience, every component Musical Fidelity brings to market meets or exceeds my own lofty expectations. The M3i is no exception.


I am particularly impressed by the power of the amplifier; it certainly goes loud in a clean and controlled way. It also proves a very detailed design, with an insight into the music that most others here can’t hope to match.


The M3si is a new integrated amplifier offering a real taste high-end sound quality.

The M3si integrated amplifier produces high quality sound, has an extensive range of useful inputs and offers high reliability, compact size and a fair price. With its strong 85 watts per channel, the M3si will drive a huge variety of appropriate loudspeakers. It has inputs for phono (MM), 4 line inputs and USB ‘B’ up to 24bit 96 kHz.

The M3si’s sound is effortless, clear and sweet. It projects wide and deep images and has plenty of power to deliver excellent dynamic range.

The M3si is unconditionally stable and will drive any appropriate loudspeaker with ease.

Although it is Musical Fidelity’s lowest price amplifier, it embodies our hallmark values of uncoloured, stress-free sound, outstanding technical performance and great value for money.

M3si In Brief

  • 85WPC
  • Excellent technical performance
  • Preamp output
  • Unconditional stability, will drive any loudspeaker
  • Wide range of useful inputs
  • including asynchronous USB and MM phono
  • Excellent build quality and convenient size


Power output: 85 W per channel into 8 ohm
THD(+ noise): <0.014 % typical, 20 Hz to 20 kHz
Signal to Noise Ratio: >98 dB ‘A’-weighted
Frequency Response: +0, –0.1 dB, 10 Hz to 20 kHz
Inputs: 4x Line Level RCA / Phono, 1x USB type ‘B’ connector - Asynchronous data stream at up to 24-bit/96kHz, 1x MM Phono input

Sensitivity (nominal):
3 mV (suitable for cartridges giving 1.5mV or more including high output MC types)
Signal / noise ratio: >70 dB ‘A’-weighted
Input impedance: 50 k ohm
Frequency response: RIAA/IEC ±1 dB, 20 Hz to 20 kHz

Dimensions - WxHxD (mm): 440 x 100 x 400
Weight (unpacked / packed): 9.2 kg/ 13 kg