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Our Thoughts RADAR AI

This is a buyer’s market for the M6Si at £874: against your in-database comps, it sits well below the £982 25th percentile and a long way under the £1,034 median, so it reads as a strong deal rather than merely fair. It is not just a little cheap; it’s priced in the lower tail of recent asks, which gives a meaningful cushion for negotiation or inspection.

The M6Si is well regarded for delivering substantial, authoritative drive with a smooth, controlled presentation that suits real-world speakers better than many similarly priced integrateds. If the listing is clean and complete, the upside is straightforward: a high-power, no-nonsense integrated at a price that leaves room versus the usual market. At this level, I’d mainly check for functional proof, remote, and any signs of heavy use, but nothing here suggests a reason to pass if it’s operating properly.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Musical Fidelity

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.

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