Heathkit GR-681 (1968–1969)
The Heathkit GR-681 is filed in this archive, but it was not an audio component. It was a color television kit. The record is thin, and what survives is essentially Heathkit's own advertising from late 1968 into early 1969. No independent review or service literature has surfaced, so the dates above are inferred from those ads rather than from confirmed production records.
Heathkit's full-page ad in Audio (November 1968, p.49) claimed the GR-681 offered automatic fine tuning on all 83 channels. A button engaged a factory-assembled solid-state tuning circuit. The same campaign described the set as having no equal at any price and promoted a two-year picture tube warranty. It was advertised at $499.95 without the cabinet, as one of four Heathkit color TVs of the period. A similar ad appeared in High Fidelity (November 1968, p.45).
Known specs from the ads:
- Color television kit
- Automatic fine tuning on all 83 channels
- Factory-assembled solid-state fine-tuning circuit
- 2-year picture tube warranty
- List price: $499.95, less cabinet
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