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At £1,150, this sits around the upper end of the recent used market for a C-90a: I’ve seen clean examples cluster roughly around £750–£1,000, with particularly tidy or serviced units pushing a bit past that, so this asking price is ambitious but not crazy rather than a bargain. It would be easier to justify if it’s been serviced, includes the remote, and has the original box/manuals; without that, it’s asking top money.
What keeps interest high is that this is one of Pioneer’s more serious vintage control amps: a heavyweight, very capable preamp with strong phono performance, good transparency, and the kind of build and industrial design that still appeals. If it’s genuinely clean and fully functional, that matters because these don’t turn up every day in nice condition. The main buyer check is age-related wear and switch/pot health, plus making sure all functions work quietly and the remote/accessories aren’t missing.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Pioneer traces its roots to 1937 in Tokyo, Japan, when founder Nozomu Matsumoto, inspired by the thrill of imported hi-fi speakers, developed the A-8 dynamic speaker and launched a radio and speaker repair shop. The business formalized as Fukuin Shokai Denki Seisakusho in 1938, evolving into Pioneer Corporation and embodying Matsumoto's philosophy of "Move the Heart and Touch the Soul" through audio innovation.
The brand excels across diverse hi-fi categories, pioneering Japan's first headphones in 1960 with the SE-1 and the world's first component-based stereo system in 1965 via the PSC-5A. Pioneer's portfolio spans amplifiers, speakers, turntables, and DACs, alongside landmark car audio advancements like the 1975 Supertuner-equipped stereo and the 1986 in-car CD player, blending home and automotive excellence.
Today, Pioneer holds a commanding mid-to-high-tier position in the market, revered for reliable, performance-driven gear that balances premium quality with accessibility. Its vintage components attract collectors, while current offerings appeal to discerning buyers seeking robust, innovative sound reproduction without boutique excess.
See all Pioneer listings on RADAR.
