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The P170 is a notably capable vintage power amplifier rather than an unremarkable old box. At £555, though, this listing is ambitious: your comparable asking-price median is £389, with the 75th percentile at £472, so it sits clearly above the normal market range.
There is still a good amplifier here for the right buyer. The P170 delivers a useful 85 watts per channel, with a muscular, controlled presentation and enough current for many real-world loudspeakers; its British, dual-mono design and rarity add genuine enthusiast appeal. At this price, condition and servicing need to be exceptional—ideally documented, with clean operation and no heat or channel-balance issues. Without that reassurance, negotiating closer to £400–£450 would make much more sense.
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.
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