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The Kenwood KA-4006 is a vintage integrated amplifier manufactured by Kenwood. Known for its quality and durability, this model is a sought-after piece in the vintage audio and electronics market. With a focus on delivering clean and powerful sound, the Kenwood KA-4006 is highly valued by audiophiles and collectors looking to add a touch of vintage charm to their audio setup.The Kenwood KA-4006 is a vintage solid-state integrated amplifier released in the mid-1970s. It delivers a warm, classic sound favored by collectors. Key specifications include a power output of 34 watts per channel into 8 ohms and a frequency response of 10Hz to 40kHz. Tube like sound. Replaced with 5-way binding posts for use with modern cables. Cleaned & tested.Detailed SpecificationsPower Output: 34 watts per channel into 8Ω (stereo)Frequency Response: 10Hz to 40kHzTotal Harmonic Distortion (THD): 0.5%Damping Factor: 32Input Sensitivity: 2.5mV (MM - Phono), 150mV (line)Signal to Noise Ratio: 76dB (MM), 90dB (line)Speaker Load Impedance: 4Ω to 16ΩDimensions: 435 x 157 x 306 mmWeight: 11 kg "Disclaimer: Due to the age of this vintage electronic item, all original internal components, wiring, and capacitors are sold strictly 'AS-IS.' While the item may power on during limited testing, original 1960s/1970s parts are unstable, prone to sudden failure, and do not conform to modern safety or operational standards. There is no warranty expressed or implied. Buyer assumes all responsibility for any maintenance, repairs, or restoration required to bring this item to fully functioning condition. Sold for collector display, repair, or parts only."
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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.
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