ADC RSQ-31 ()
A turntable lost to time—only its stylus lives on in catalog footnotes.
Specifications
| Manufacturer | American Diagnostic Corporation (ADC) |
| Product type | Turntable |
Collectibility & Value
A replacement stylus for the ADC RSQ-31, model ADC RSQ-34, is available through Martek Distribution for CAD $32.97. This single listing is the only known trace of the RSQ-31 in the present day—no reviews, no brochures, no schematics. For collectors, ADC as a brand remains a "treasure trove of undervalued gems," though interest centers on the original XLM series moving magnet cartridges and the early metal-faced Sound Shaper equalizers. The RSQ-31 itself has faded into near-total obscurity, with no current market prices, condition reports, or known failure modes documented. It survives only by proxy: a compatible stylus model, quietly listed, easily overlooked.
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