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At £131, this looks a touch ambitious for a used X-10D unless it’s exceptionally clean and complete. Typical second-hand pricing for these tube buffers is usually more like £70-£110, with £131 only really making sense if it’s boxed, freshly serviced, or includes the right power supply and leads.
That said, it’s a well-liked little box if you know what you want from it: a bit of valve warmth, smoother top end, and an easy way to soften a bright source or lean system. The upside is strongest when the unit is original and working properly, since these can be simple to live with and still useful in a modest setup. Check that the tube is healthy, the supply is original, and the cables/accessories are all there.
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.
