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M5SI Amplifier

M5SI Amplifier

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The M5si is a real high end amplifier. At 150wpc, with high current delivery, it will drive virtually any loudspeaker easily. Free Shipping to Continental US only !

Internally the M5si is configured as two independent monoblocs with a separate preamp, but all mounted on one pcb. Its technical performance is about equal to the M6si. 

The M5si has very low distortion, outstanding noise ratio and an extremely flat frequency response.  Inputs; phono ( mm ), 4 line, and USB ’B’ up to 24bit 96kHz.

The M5si produces an extraordinary sweet clear lucid sound. Significantly it was developed after our amazing legendary Nu-Vista 800. Consequently some of the Nu-Vista 800’s subtle pcb layout solutions have found their way into the M5si.

When you hear it we are sure you will understand the relationship between the two. The M5si projects a deep and wide stereo image with very extended bass and a crystalline top end without a trace of harshness. 

Musical Fidelity M5SI Amplifier User's Manual


The M5si In Brief

- 150wpc

- Excellent technical performance

- Preamp output

- Unconditional stability, will drive any loudspeaker

- Wide range of useful inputs including asynchronous USB and MM phono

- Excellent hunky build quality


Power output: 150 Watts per channel into 8 Ohms

THD ( + noise ): <0.010 % typical 20Hz - 20 kHz

Signal to Noise Ratio: >100dB ‘A’ - weighted

Frequency Response: +0, –0.1dB, 10Hz to 20 kHz


4x Line Level RCA

1x USB type ‘B’ connector - asynchronous data stream at up to 24-bit / 96kHz

1 x MM phono input

Trigger in

Phono Input

Sensitivity: 3mV nominal ( MM )

Signal / noise ratio: >70dB ‘A’-weighted

Input impedance: 50k Ohms ( MM )

Frequency response: RIAA/IEC ±0.5dB 20Hz-20kHz


Trigger out

Fixed, line level output

Variable, preamp output


Dimensions - WxHxD ( mm ): 440 x 100 x 405

Weight ( unpacked / packed ): 14.6 kg / 18.8 kg

Contact us to inquire how you can finance your purchase through our partner, Synchrony.