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When new, the Azur 640A was a serious mid-market integrated amplifier; at £146 used, this example is ambitious rather than a bargain. Your 39-listing sample puts the market at a £106 median, with £88–£127 covering the middle half, so this sits clearly above the 75th percentile. For an unknown-condition unit, a more convincing buy would be around £100–£120 GBP, unless it is exceptionally clean and complete.
It remains a worthwhile amplifier when properly presented: the 640A offers roughly 65W per channel into 8 ohms, a sturdy power supply, useful pre-outs, tone controls and a generally clean, lively sound. It can partner a broad range of speakers and has enough headroom for many domestic systems. At this price, insist on the remote, quiet operation, functioning input selector and volume control, and confirmation that both channels remain balanced; otherwise, negotiate firmly toward the normal market level.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Cambridge Audio emerged from the innovative spirit of 1960s Britain, founded in Cambridge, United Kingdom, by a group of young engineers who spun off from Cambridge Consulting Group. Established in 1968, the brand launched with the groundbreaking P40 integrated amplifier—the first to employ a toroidal transformer, setting a new standard for dynamic power delivery in hi-fi design that endures in high-end gear today. This heritage of British engineering excellence propelled decades of award-winning products, navigating ownership changes including a revival under entrepreneur Vince Adams and acquisition in 1994 by Julian Richer and James Johnson-Flint of Richer Sounds.
The brand excels across core hi-fi categories, renowned for integrated amplifiers like the iconic A1 and P-series, alongside streaming DACs, network players, turntables, and all-in-one systems that prioritize pure analogue warmth and digital precision. Speakers, headphones, and cables round out a cohesive ecosystem, emphasizing accessible high performance without excess frills.
Positioned firmly in the mid-tier market, Cambridge Audio delivers premium British sound—detailed, rhythmic, and uncolored—at prices that democratize quality for discerning buyers. Free from corporate bloat, it holds a reputation for reliability and value, appealing to enthusiasts seeking sophisticated hi-fi that punches above its weight rather than chasing ultra-high-end esoterica.
See all Cambridge Audio listings on RADAR.
