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Are you looking for a capable second system or simply the most amplifier for the money? At £45, this is a strong bargain: it sits well below the supplied comparable range, where the 25th percentile is £100, the median £120, and the 75th percentile £158. Even allowing for its age, the price leaves considerable room for value.
The 650A is a well-regarded, straightforward analogue integrated amplifier, offering 75 watts per channel, plenty of inputs, solid build, and an energetic, spacious presentation with good midrange detail and bass control. It should suit a wide variety of passive speakers and makes an excellent inexpensive upgrade or backup amp. Since the condition is unknown, confirm both channels work cleanly, the volume control is quiet, and the protection circuit does not trip—but at £45, a working example is hard to fault.
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.
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