Musical Fidelity M8 700M
Monoblock power amplifier delivering 700 watts, designed for high-fidelity systems seeking dynamics and low distortion.
Description
The M8 700M is a monoblock power amplifier from Musical Fidelity, intended to equip one channel of a high-fidelity system in a mono-per-channel configuration. Each block delivers a power output of 700 watts, making it a model built to drive speakers that are demanding in terms of current and dynamics.
On the technical side, this monoblock displays an extremely low distortion of 0.001% at 1 kHz. This distortion remains well controlled across the entire audible spectrum, staying below 0.005% at 20 kHz. Beyond the audible spectrum, it reaches 0.02% at 50 kHz and around 0.06% at 100 kHz, figures which, although beyond the range of human hearing, demonstrate the stability of the power stage across a wide bandwidth. The A-weighted signal-to-noise ratio stands at -120 dB, a level that limits residual background noise and allows the music to stand out against a silent backdrop.
This type of amplifier is aimed at high-end systems where each channel benefits from its own power amplifier, a configuration valued for its electrical independence between channels and its ability to deliver power without compression during demanding dynamic passages.
Technical specifications
| Power | 700 W |
| Distortion at 1 kHz | 0.001 % |
| Distortion at 20 kHz | < 0.005 % |
| Distortion at 50 kHz | 0.02 % |
| Distortion at 100 kHz | 0.06 % |
| Signal to noise ratio | -120 dB (A-weighted) |
What to check before buying used
On a monoblock of this power output, check the condition of the potentiometers and protection relays, which can become crackly or trip unexpectedly after years of service. Also check that the capacitors in the power supply stage have been properly reformed, as their capacitance degrades over time and with inactivity. A check of the fan or heat sink is also advisable, as inadequate cooling can affect the stability stated across the bandwidth.
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