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This looks like a fair ask, sitting right on the median of the recent used market at £1,995, with the 25th to 75th percentile band running from £1,727 to £2,245. It’s not a bargain, but it’s squarely in sensible territory for a big-ticket integrated of this calibre.
The M6 500i is well liked for its huge grip, effortless drive and very clean, controlled presentation, especially with tough-to-drive speakers. For a clean, complete example, the upside is the sound-per-pound and the fact that these are serious, no-nonsense amps; with condition unknown, I’d just want to confirm it’s fully original, functions properly, and includes the remote and any packaging if possible.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Musical Fidelity, a British hi-fi icon, traces its roots to 1982 when clarinettist and audio enthusiast Antony Michaelson founded the company in London. Disillusioned with the sound quality of existing gear after his stint at predecessor Michaelson & Austin, he handcrafted his debut product—a minimalist preamplifier dubbed "The Preamp"—on his kitchen table. Paired with the quirky Dr. Thomas power amplifier, these designs disrupted the market with their bold aesthetics and sonic punch, establishing Michaelson’s experimental ethos from the outset.
The brand has long centered on amplifiers as its cornerstone, spanning integrated, power, phono, headphone, and preamp models renowned for Class-AB topology and innovative touches like Nuvistor tubes. It expanded into streaming players, DACs, CD players, Bluetooth receivers, all-in-one systems, and even headphones and turntables, always prioritizing musicality over convention. Unconventional industrial designs, from curved heatsinks to sculptural panels, became signatures, influencing competitors.
Positioned firmly in the high-end arena, Musical Fidelity commands respect among discerning audiophiles for its value-driven performance and soulful sound. Iconic models like the A1 and F-series endure as collector favorites, blending accessibility with premium engineering. Acquired by Austria’s Audio Tuning in 2018, it continues evolving under new stewardship while honoring its heritage as a boutique force in British hi-fi.
See all Musical Fidelity listings on RADAR.
eBay UK
GB
eBay UK
GB
audio-markt.de
Good
eBay US
eBay UK
Marktplaats
NL
