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Up for sale is a turnkey, matched vintage tube stack: the Heathkit AA-100 Integrated Stereo Amplifier and AJ-41 AM/FM Stereo Tuner.SpecificationsHeathkit AA-100 Stereo Integrated AmplifierPower Output: 25 Watts RMS per channel (50 Watts total stereo / 60 Watts peak)Power Output Tubes: Push-pull 7591 output section.Full Tube Complement: 4x 7591, 2x 7199 (NOS RCA), 4x 12AX7, 2x EF86, 1x GZ34 tube rectifier.Frequency Response: 30 Hz to 15 kHzInputs: Magnetic Phono (Stereo & Mono), Tape Head, Tuner, Aux 1, Aux 2.Speaker Outputs: 4, 8, and 16 Ohm taps + mixed-channel center outputHeathkit AJ-41 AM/FM Stereo Tube TunerTuning Bands: AM (MW) and FM StereoFeatures: Built-in Multiplex (MX) stereo decoder, individual AM & FM tuning meters, squelch control, AFC.Tubes: 16-tube complement including 6AU6, 6BA6, 12AT7, and 12AU7 stages for high selectivity.Audition/testing available for serious local buyers. Shipping is available ( msg for accurate pricing)
A classic tube integrated, but this asking price is lofty. Typical used examples seem to land far below US$1,118, with working or restored units often seen around the low hundreds to roughly US$500, while nicer, professionally sorted examples can climb higher; at US$1,118 this is above the usual range and only makes sense if it’s exceptionally restored, documented, and ready to enjoy.
What makes it worthwhile is the AA-100’s reputation for warm, engaging midrange and honest vintage tube power in a compact, collectible package. For a buyer, the upside is strongest if the listing includes a recent rebuild, strong test results, original iron, and clean cosmetics; without that level of proof, the price is hard to justify for a 1960s amp with age-related service risk.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Heathkit traces its origins to 1911 in the United States, when Edward Bayard Heath founded an aircraft company in Chicago after acquiring the Bates Aeroplane Co. Renamed E.B. Heath Aerial Vehicle Co., it pioneered kit-built planes like the 1926 Heath Parasol. Following Heath's death in a 1931 test flight, Howard Anthony acquired the bankrupt firm in 1935, shifting focus to aircraft accessories in Benton Harbor, Michigan. Post-World War II, Anthony pivoted to electronics in 1947 with surplus parts, launching the iconic O-1 oscilloscope kit for $50—a bestseller that birthed the Heathkit brand and its DIY ethos.
In hi-fi audio, Heathkit earned acclaim for tunable amplifiers, integrated receivers, preamplifiers, tuners, and speaker systems, all sold as meticulous assembly kits from the 1950s through the 1970s. Standouts included the AA-151 and A-7E power amps, known for their robust tube and solid-state designs, alongside full stereo systems like the AR-15 receiver. The brand expanded into test gear and amateur radio but prioritized high-fidelity components for home enthusiasts.
Heathkit occupied a mid-tier market niche, delivering exceptional value through user-assembled kits that rivaled factory-built rivals at half the cost. Prized for reliability, customization, and warm sound signatures, these vintage pieces command collector status today among audiophiles restoring "kit-built" icons. Though production ceased in the 1980s after Zenith's acquisition, Heathkit's legacy endures as a cornerstone of DIY hi-fi heritage.
See all Heathkit listings on RADAR.
