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This is a buyer’s market for this amp at the moment: £110 sits just above the £104 median and within the main used range, between the £87 25th percentile and £118 75th percentile. That makes it fairly priced, not a bargain, but also not ambitious.
The 640A has a solid reputation as a clean, muscular, no-nonsense integrated with enough current to drive a wide range of speakers well, so the appeal is in dependable everyday performance rather than flash. At this level, the main upside is a good-condition example from a careful owner, ideally with the original remote and no scratchy controls or relay issues; if it’s been serviced or clearly maintained, £110 is an easy listen.
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.
