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Unknown condition makes this a slightly easier buy to judge on price alone, and at £134 it lands just above the £119 25th percentile and a touch below the £153 median. That puts it in the fair-to-good zone rather than bargain territory, but still reasonable for a sought-after integrated amp of this type.
The A-400 is well regarded for its lively, clean presentation and very usable MM/MC phono stage, so it has real appeal if you want a classic Pioneer that punches above its weight. At this price, the main upside is getting a respected model without paying top-of-market money; just confirm it powers up cleanly, both channels work, and the controls are quiet, since age-related wear matters more than cosmetics here.
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.
