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£200 for a KA-4000 looks broadly fair rather than a steal. Comparable vintage listings land around the mid-£100s to low-£200s when working and presentable, while restored or especially clean examples can push higher, so this asking price sits near the sensible middle of the market.
What makes it interesting is the model itself: early Kenwood/Trio integrated amps have a proper vintage build, an engaging, full-bodied presentation, and enough collector appeal to keep demand steady. If this one is original, tidy, and fully functional, £200 is a reasonable entry point. The big buy-side check is condition, since age-related service needs matter more than cosmetics here—confirm clean channel balance, quiet controls, and whether any recent recap or servicing has been done.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Kenwood traces its origins to December 21, 1946, when it was founded as Kasuga Radio Co. Ltd. in Komagane City, Nagano Prefecture, Japan, by a group of entrepreneurs led by William "Bill" Kasuga. Emerging in the postwar era, the company initially produced electronic components and amateur radio gear, renaming to Trio Corporation in 1960 before adopting the Kenwood name in 1986 to appeal to Western markets—blending "Ken," a familiar name across Japan and America, with "Wood" evoking durability and Hollywood. This rebranding fueled rapid international growth, starting with a U.S. office in Los Angeles County in 1963.
The brand built its legacy on high-quality audio and communications equipment, excelling in home hi-fi amplifiers like the acclaimed 1970 Supreme 1 multichannel model, receivers, tuners, and speakers with innovations such as polypropylene cones. Kenwood also pioneered car audio systems, including the first audio/video amplifier for home theater in 1981 and anti-theft cassette decks, alongside professional two-way radios and amateur transceivers. While maintaining roots in consumer electronics, it expanded into automotive infotainment.
Today, as part of JVCKENWOOD since the 2008 merger with JVC, Kenwood holds a solid mid-tier position in car audio and professional communications, prized by enthusiasts for reliable performance and aftermarket upgrades. Its vintage home hi-fi gear from the 1970s and 1980s commands respect among collectors for robust build and warm sound, though it no longer dominates pure hi-fi markets.
See all Kenwood listings on RADAR.
