Heathkit AA-11 (1960–1963)
The Heathkit AA-11 is a stereo power amplifier from the company's early-sixties kit line, sold as a building project for the home hobbyist. The official manual titles it a "Stereo Power Amplifier" and notes it was designed to be paired with a separate Heathkit preamplifier, pointing to a modular, component-based approach to stereo at the time. The manual itself carries a 1959 date, though production is generally placed at 1960–1963.
Documentation on the AA-11 is thin, and most of the hard numbers trace back to a single source. The specs that are recorded: 25 watts per channel at 1% THD, a frequency response of 20–20,000 Hz ±1 dB, input sensitivity of 0.5 V, and a damping factor of 14. The output stage is described as push-pull. The chassis measures 14-1/4" × 8-1/8" × 14-1/4" and the unit weighs 24 lbs.
Period Heathkit advertising in High Fidelity (December 1961, p.14) promoted the company's "newest kits" with an emphasis on quality and value, and the AA-11 sat within that broader catalog of build-it-yourself stereo gear. Beyond that, no original price, circuit detail beyond the push-pull output, or contemporary review commentary has surfaced.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.