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The M5si is a sensational integrated amplifier with exceptional power and clarity.

M5si – Overview

The M5si is a real high end amplifier. At 150wpc, with high current delivery, it will drive virtually any loudspeaker easily.

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.

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/noise ratio >100dB ‘A’ – weighted
Frequency response +0, –0.1dB, 10Hz to 20 kHz
Inputs 4x Line Level RCA,1x USB type ‘B’ connector – asynchronous data stream at up to 24-bit/96kHz1 x MM phono input,Trigger in
Phono Input Sensitivity 3mV nominal (MM)
Phono Input Signal / noise ratio >70dB ‘A’-weighted
Input Impedence 50k Ohms (MM)
Phone Input Frequency Response RIAA/IEC ±0.5dB 20Hz-20kHz
Outputs Trigger out,Fixed, line level output, Variable, preamp output
Dimensions (WxHxD) 440 x 100 x 405mm
Weight (unpacked / packed) 14.6 kg/ 18.8 kg


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