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This is a buyer’s market for high-end used power amps, and the £5,087 asking price for the Bryston 4B3 is fair, sitting just above the median of £4,998 and right at the 75th percentile of £5,085 from five recent GBP listings. It’s not a bargain, but it’s squarely in line with what informed sellers are currently commanding, so there’s no need to push back unless the condition is questionable or accessories are missing.
The 4B3 is a legendary Bryston “Cubed” amp: 300W into 8Ω, nearly 600W into 4Ω, and distortion below 0.0005% in the bass and midrange, delivering unmatched control and dynamic headroom. It’s built to last with a 20-year warranty on parts and labor, and its ability to bridge to 900W mono makes it a rare, versatile powerhouse for demanding speakers. If this listing is clean, original-owner, and includes the rack ears and manuals, it’s a solid buying opportunity at a fair price.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Bryston emerged from Canada's medical electronics sector, where it began producing high-tech blood analyzers in 1962. The pivot to high-performance audio came in 1976, sparked by James Tanner's quest to drive demanding electrostatic speakers. Drawing on medical-grade components, the debut of the 4B amplifier at the Chicago Consumer Electronics Show marked the brand's entry into hi-fi, quickly earning acclaim from critics like Peter Aczel and establishing its Canadian manufacturing legacy.
Renowned for robust amplifiers and preamplifiers, Bryston has expanded into digital components such as DACs and streamers, as well as powered speakers. This evolution reflects a commitment to both analog purity and modern digital demands, serving consumer, professional, and commercial markets—from home listening to stadium sound reinforcement—while maintaining a focus on uncompromised musical accuracy.
Positioned firmly in the high-end audio arena, Bryston commands respect for its no-nonsense engineering, timeless designs, and unparalleled reliability, backed by industry-leading warranties. Music and movie enthusiasts trust it for scientifically verifiable sound quality that endures for decades, cementing its status as a benchmark for discerning buyers seeking longevity without compromise.
See all Bryston listings on RADAR.
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