Audio Research D-100B
Surviving information on the Audio Research D-100B is very thin. The model shows up in a single classified advertisement in Audio (June 1981, p.90), where a seller asked $500 for a D-100B, listing it alongside an Audio Research SP-4 preamplifier ($400), Magnepan MG-1 speakers ($400), a Formula-4 Mayware tonearm ($50), and a Dynavector DB-505 cartridge ($350). That classified listing is essentially the whole documented record.
No owner's manual, review, or specification sheet for the D-100B has surfaced. The $500 asking price in mid-1981 suggests a mid-level position in the Audio Research lineup at that time, but even the product type — power amplifier, preamplifier, or something else — is not confirmed by the available documentation. Until more material appears, the D-100B remains one of the least-documented entries in the Audio Research catalog.
Known facts:
- Advertised for sale at $500 in June 1981 (Audio, June 1981, p.90)
- Sold alongside an SP-4 preamp, Magnepan MG-1s, and other high-end components
- Product type unconfirmed
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