Dual CS 731Q (c. 1980)

Little is documented about the Dual CS 731Q beyond an Audio equipment profile (May 1980, p.70), which published the manufacturer's specifications. It was an automatic single-play turntable with a quartz-referenced, phase-locked-loop direct-drive motor. It sold for $559.95, or $699.95 with an Ortofon ULM 60E cartridge fitted. The known specs, from that profile:

Two-speed operation
Quartz-reference, phase-locked-loop direct-drive motor
Wow and flutter: ±0.015% WRMS
Rumble: −78 dB (DIN)
Tracking force: 0.5–1.25 grams
Speed control: ±5.5%
Channel separation: 30–35 dB
Dimensions: 16½ × 14½ × 5¼ in (W × D × H)
Optional cartridge: Ortofon ULM 60E with Bi-Rad stylus

Past that listing, almost nothing survives in the record. There is no extended review prose and no significant follow-up coverage in the sources available here. The CS 731Q seems to have been one of Dual's more quietly documented models, and what is known about it rests almost entirely on those published figures.