Heathkit AJ-33 (1963–1965)
A $99.95 transistor tuner that promised to pull in any station that could possibly be pulled in. The period press largely agreed.
Overview
Heathkit's advertising for the AJ-33 leaned on one boast, lifted from Radio-Electronics' July 1964 issue: the tuner would "get any station that can possibly be pulled in." That's marketing copy, and collectors should treat it as such. The real story is better than the slogan. The AJ-33 was Heath's low-cost entry into all-transistor AM/FM/FM-stereo tuning, sold as a kit for $99.95 and pitched as the matching half of a transistor "twins" pair with the AA-22 stereo amplifier.
The pitch was simple. All-transistor circuitry meant cooler, faster operation, lower power consumption, longer life, and the "instant response and realism of transistor sound." Heath put the tuner in a low-silhouette walnut cabinet with an extruded brushed gold-anodized aluminum front panel, a look the company repeated across its transistor line in this period. The AJ-33 shipped as the AJ-33A kit at 17 lbs. The FM front-end tuner came pre-built and pre-aligned, and the AM-FM I.F. circuit board came assembled, both to keep assembly time down.
The feature set at the price is what made the AJ-33 worth owning. It had a built-in stereo demodulator, AGC for steady volume, AFC for drift-free reception, a stereo indicator light, and a stereo phase control for maximum separation and minimum distortion. Anyone who has aligned a vintage tuner will appreciate that last one. There were also filtered stereo outputs, a tuning meter, flywheel tuning, a voltage-regulated power supply, and an illuminated slide-rule dial. For a kit tuner under a hundred dollars, that was a long list.
The period press was receptive. High Fidelity (November 1964, p.113) ran Heath's own pull-quotes in a two-page spread, including a claim attributed to its September 1964 issue that the tuner "met its important performance specifications with room to spare." The same ad block paired the AJ-33 with the AA-22 amplifier at $99.95 each and reproduced the Radio-Electronics line about pulling in any station. HiFi/Stereo (September 1963, p.114) and Audio (September 1963, p.54) both ran the launch advertising for the transistor tuner, describing the low-silhouette walnut cabinetry and brushed gold-anodized panel as the visual signature of the new line.
The AJ-33 sat in a crowded Heath tuner lineup. The all-transistor AJ-43C was the deluxe option at $129.95. The tube-type AJ-32 sold for $89.95 and the low-cost tube FM-only AJ-13 for $49.95. Buyers who wanted a receiver rather than a separate tuner could step up to the AR-13A at $195.00. The AJ-33 sat in the middle: transistor operation without the deluxe price, AM and FM both, stereo demodulation built in.
The pre-aligned front-end and I.F. board made the original build easier than most Heathkits. Sixty years on, the usual cautions apply. The walnut cabinet and gold-anodized panel are the parts most often damaged, and the tuner's alignment is only as good as its last servicing. The AJ-33A kit listing at 17 lbs. tells you this is a substantial piece of metal and wood. Prices in the current market are not documented here, and the fact sheet carries no production-run figures, so treat any seller claim of rarity with skepticism until verified.
For anyone building a Heathkit transistor-era stack, the AJ-33 is the natural partner to the AA-22, and the period advertising makes the pairing explicit. It is not the most celebrated Heath tuner. It was the accessible one, the $99.95 entry for transistor stereo tuning.
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