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At £150, this sits right on the money versus the recent UK used market for this amp: just above the £133 lower quartile and a touch under the £155 median, so it reads as a fair buy rather than a bargain or an ask that needs haggling down hard. It’s not priced like a museum piece, and that’s about right for a sought-after older integrated that still has real appeal.
The A-400 is well regarded for its straightforward, lively presentation and solid build, making it a rewarding route into vintage Pioneer without overcomplication. If the unit is clean, fully working, and hasn’t had obvious abuse, the main upside is getting a respected classic at sensible money; at this price, I’d mainly want confirmation of quiet operation, smooth controls, and no channel imbalance.
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.
