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£175 is fair, sitting almost exactly on the £174 median for recent UK comparables and comfortably inside the main market band between £153 and £199. It’s not a bargain, but it’s also not inflated; at this level, the value depends more on condition and provenance than on price alone.
That makes this a sensible buy if it’s clean, original, and working properly. The A-400 is still well regarded for its lively, energetic presentation and strong grip for a classic integrated amp, so a tidy example can be a very satisfying listen. If it’s been serviced, has its original remote/box/manual, or comes from careful ownership, that adds real upside; if not, just factor in the usual age-related checks before committing.
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.
