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This is a buyer’s market for this category: at A$1,831, this sits just above the supplied 25th percentile of A$1,811 and below the A$1,867 median. That makes it a good, slightly-better-than-typical buy rather than a bargain, assuming the amplifier is fully functional and honestly represented.
The M5si remains appealing for its muscular 150 watts per channel, high-current delivery, clean presentation, and ability to handle demanding speakers. Its built-in MM phono stage, four line inputs, USB DAC, and substantial construction add useful flexibility without making it feel dated. Check that the remote, USB input, phono stage, display, and both channels work properly, and confirm the unit is quiet at idle; if those basics are sound, A$1,831 is a sensible enthusiast price and worth pursuing.
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.
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