Pioneer SD-100 (1983–1985)

The Pioneer SD-100 is a cassette double deck produced from 1983 to 1985. Documentation on this model is thin — no original manual, retail price, or period advertising survives in the Archive's records, and the only corroborated listing comes from a single equipment directory. What that record shows is a compact, no-frills dual-transport deck.

Specs as listed: tape speed of 4.8 cm/s, wow and flutter rated at 0.15% WRMS, frequency response of 30–14,000 Hz on chrome tape, and a signal-to-noise ratio of 60 dB. It draws 22W, measures 420 × 139 × 110 mm, and weighs 4 kg. Those figures place it as a modest performer even by contemporary standards — the frequency response and S/N figures suggest a deck built for convenience dubbing and casual listening rather than critical recording.

Audio (July 1989, p.81) is the only period publication in the Archive that mentions the SD-100, and even that reference is fragmentary — the review text itself is largely illegible, leaving the brief listing as the sole confirmation that the model existed in the marketplace.

Notably, the SD-100 should not be confused with the separately listed Pioneer SD-1000, which carries different specifications in the same directory. No explicit relationship between the two models is documented, though their shared prefix suggests a possible family line.

What remains undocumented: the transport mechanism (whether both wells record or only one), head configuration, input/output complement, and any original market positioning. If you own an SD-100 or have seen its manual, the Archive would welcome the details.