Musical Fidelity M6si | Black Stereo Integrated Amplifier


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Details & Highlights

Product Highlights

    Ready to introduce you to quality

    The updated Music Fidelity M6si integrated amplifier improves upon its predecessor with additional inputs and re–engineered core components greatly improving both technical and audio performance. Much like the company name, the M6si stresses sound reproduction and integrity for rock solid sonic imaging through effortless stable power. The result is an pre–amp/power amp that is clear, ungrainy, with a transient range and cavernous low end in a easily integrated chassis. Make the M6si part of your audio stack for a reliable component that offers wide sound stage for a realistic price point.

Details from Musical Fidelity

    M6si – Design and Build

    We felt that the original M6i's package size, power and price were spot on. What was needed was the addition of extra input facilities and, if possible, an all round improvement of technical performance. By the way, despite endless component price rises during the M6i's life, we didn't alter its selling price. This made our final requirement even harder; the M6si should not be significantly more expensive than the outgoing model.

    First we determined to use Musical Fidelity's exclusive SMD layout techniques. This reduced the size of the circuit's footprint and gave us greatly increased flexibility with internal layout. Consequently the new M6si is configured as a pre amp with two completely separate and independent monobloc power amps. The M6si is a proper pre amp with its own separate regulated power supply and discrete monobloc power amps, sharing same casework. This is a big change from the outgoing M6i. The M6si's technical performance is a significant advance on the old model.


    The M6si performs immaculately. Because of its pre amp with two monobloc power amp configuration both channels perform virtually identically, just what you would expect from a pre amp with separate power amps and not what you would expect from a normal integrated amplifier. The M6si is a cut above everything else.

    Distortion is very low at less than 0.005%. More tellingly, HF distortion is incredibly low. At 10 kHz about 0.006% and at 20 kHz an astonishing 0.007%. The vast majority of amplifiers suffer huge increases in distortion as you go up in frequency. The M6si's meticulous PCB and circuit design means that HF performance is virtually identical to the LF performance. This is significant for sound quality.

    Channel separation is remarkable, and remarkably consistent. Most amplifiers (integrated or pre/power) have dramatically worsening cross talk with increasing frequency. The M6si cross talk is outstanding and even at 20 kHz it is better than 82dB.

    The phono stage is also special. It has very accurate RIAA, within ± 0.5dB from 20 Hz to 20 kHz. Also it maintains its accuracy right out to 50 kHz. The MM noise ratio is an outstanding 93dB down whilst the MC stage is, perhaps even more amazingly, about 87dB down. The phono stage distortion is a very low 0.01%. All in all the M6si's phono stage is exceptional.

    USB Input

    The 24 bit 96 kHz asynchronous USB input uses exactly the same circuitry and technology as our highly regarded V–Links and other top quality computer interfaces. Jitter is virtually eliminated. Noise is incredibly low and distortion virtually non–existent. The M6si's USB input is capable of dredging the finest details from the computer source.


Features & Specs

Best Seller
Manufacturer's Warranty
    2 Year Limited
Detailed Specifications
  • Power: 220 Watts per channel into 8 Ohms
  • Voltage: 42 Volts RMS, 20Hz to 20 kHz; onset of clipping, 120 Volts peak to peak
  • Current: 45 Amps peak to peak
  • Damping factor: 180
  • Output devices: 2 pairs per channel

  • Line input
  • THD+N: < 0.007 % typical, 20Hz to 20 kHz
  • Signal / noise ratio: > 107dB 'A'–weighted
  • Input impedance: 40 k Ohms
  • Frequency response: + 0, –0.1dB, 10Hz to 20 kHz

  • Phono input
  • Sensitivity MM: 3mV nominal
  • Sensitivity MC: 0.4mV nominal
  • Signal / noise ratio: > 84dB 'A'–weighted
  • Input impedance: 47k Ohms (MM and MC)
  • Frequency response: RIAA/IEC ±0.5dB 20Hz–20kHz

  • USB input
  • USB: Asynchronous, sample rate up to and inc. 24 bit, 96 kHz USB audio stream.

  • Connections
  • USB input: Type "B" socket up to and inc. 24 bit 96kHz USB audio stream
  • Phono inputs: 1 pair Phono MM inputs
  • Phono grounding post: 4mm banana post to chassis earth
  • Line level inputs: 4 pairs line level RCA connectors, 1 pair line level balanced XLR connectors
  • Line level outputs: 1 pair line level RCA connectors, constant level LINE outputs, 1 pair line level RCA connectors, PREAMP outputs for e.g. biamping
  • Speaker outputs: 2 pairs 4mm banana plug/binding posts

  • Power requirement
  • Mains voltages: 115/230VAC 50/60Hz (factory pre–set), 100VAC 50/60Hz (alternative)
  • Consumption: <0.5W in standby mode, 58W on, idle , 680 Watts maximum

  • Weight
  • Unit only, unboxed: 16.6 kg (36 � lbs)
  • In shipping carton: 21.3 kg (47 lbs)

  • Dimensions
  • Wide: 17.33 in.
  • High including feet: 5 in.
  • Deep (front to back) including terminals: 15.75 in.
Product Bullets


Included Coverage from Musical Fidelity: 2 Year Limited

Category ID: 158 | $2,999.00