Audio Research D-350
Little is documented about the Audio Research D-350 amplifier. Almost everything that survives comes from private classified ads placed in Audio magazine between late 1978 and early 1981 (Audio, November 1978, p.149; February 1979, p.109; March 1981, p.72).
The earliest listing found, from November 1978, described a D-350 amplifier four months old and "flawless" at $1,875 per Audio (November 1978, p.149). A few months later, an advertiser offered the "latest model" D-350 at $1,995, claiming a $1,000 saving (Audio, February 1979, p.109). By March 1981, another private party was asking $1,500 (Audio, March 1981, p.72). These listings suggest a high-end amplifier that changed hands on the used market for several years, but they reveal nothing about its circuitry, power output, or position within the Audio Research lineup.
A page in the January 1979 issue of Audio (p.74) appears in the research files for the D-350, but the surviving OCR is too fragmented to attribute any of its measurements or comments to the model with confidence. No owner's manual, full review, or factory specification sheet has been found.
Known from period listings:
- Component type: amplifier
- Marketplace activity: November 1978 – March 1981
- Advertised prices: $1,875 (used, Nov. 1978); $1,995 (Feb. 1979); $1,500 (Mar. 1981)
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