Musical Fidelity M8s 500S Stereo Power Amplifier
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Musical Fidelity M8s 500S Stereo Power AmplifierMusical Fidelity M8s 500S Stereo Power AmplifierMusical Fidelity M8s 500S Stereo Power Amplifier

Musical Fidelity M8s 500S Stereo Power Amplifier

  (1 Review)
£3,332.50 Exc. VAT |  |

Musical Fidelity M8s 500S Stereo Power Amplifier

The M8-700 has received outstanding reviews and an enthusiastic reception from knowledgeable audiophiles. The combination of high power and cutting edge technical performance has proved a compelling combination. However some customers do not have the space for two large monoblocs and do not necessarily need that much power. For them we have designed the M8s-500s. Pairing it with the matching M8 Preamp gives an amplification system fit of the highest levels of reproduction.

Design + Build

The M8s-500s is a fully balanced stereo amplifier which delivers 500wpc, which almost doubles into 4ohms. The M8s-500s is engineered for very low distortion typically less than .001% of 1kz and below .005% at 20kHz. Even at the ridiculous level of 50kHz distortion is a mere 0.02% creeping up to around 0.06% at the even more unreasonable figure of 100kHz. These may be measurements of frequencies never encountered in the real world but they prove a point; that the M8s-500s significant less distortion than rival designs.
Like the M8-700m the M8s-500s has very low noise. Its combination of huge power reserves, low distortion and low noise contribute to its effortless performance. It delivers everything from delicate detail to massive dynamic slam with incredible speed and precision.
Whatever style of music you listen to the M8s-500s serves it up in a spacious sound stage with outstanding realism.
Its power and balance mean that the M8s-500s can drive just about any loudspeaker you choose. It is, of course, the perfect partner/visually and sonically for our M8 preamp.


  • Power output: 500 Watts per channel into 8 Ohms (27 dBW)
  • THD(+ noise): <0.007% typical
  • Signal to Noise Ratio: >120dB 'A' weighted
  • Frequency Response: +0, –1dB, 10Hz to 80kHz


  • 1x RCA Phono Line Level
  • 1x Line level XLR Balanced
  • 1x Trigger input 3.5mm (⅛”) mono jack ±4.5 to ±15V DC


  • 1x RCA Phono Line Level (loop output)
  • 1x Line level XLR Balanced (loop output)
  • 1x Trigger output 3.5mm (⅛”) mono jack 12V DC


  • Dimensions - WxHxD (mm): 440 x 160 x 460
  • Weight (unpacked / packed): 29 kg / 34.5 kg
Average Rating (1 Review):  
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Impressive power amp
21 August 2023  | 

I was looking for an upgrade and I had shortlisted 5 or so power amps but to audition them up in the north east was an impossible task. So a few emails and a chat with Martin at AS concluded in the purchase of this Musical Fidelity M8 500s power amp. I've had if now for well over a week and I have to say it is quite a remarkable amp and it drives my B&W 803 D3's beautifully. It has finess when needed, a ground shaking bottom end and the texture it brings to vocals is quite remarkable. This is one really impressive amp Oh! and stunning power, this thing has grunt in spades and will boogie with the best of them. I have to take my hat off to Martin for his advice and his reasoning behind his recommendation towards this amp, and offer a huge thank you for his help.

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