Audio Research 350B (c. 1980)
Little is documented about the Audio Research 350B. No catalog pages, no owner's manual, and no production dates have surfaced. The archive's file on this model is essentially a single period spec sheet.
High Fidelity (1980, p.52) recorded the 350B as a 45-watt (16.5 dBW) continuous amplifier into 8 ohms. Frequency response is ±1 dB from 20 Hz to 20 kHz. IM distortion is 0.08% at 40 watts. Signal-to-noise ratio is 83 dB on phono and 100 dB on aux (IHF A-weighted). Phono equalization held ±0.2 dB from 30 Hz to 15 kHz, with sensitivities of 3/6 mV phono and 120 mV high level. The same spec box lists inputs for one phono, two tape, one tuner, and one aux, plus a weight of 21 lbs 13 oz. That reading puts the 350B in integrated-amplifier territory rather than among Audio Research's power-only D-series models.
The review's prose didn't survive the scan, so that spec sheet is the whole known record. If a 350B manual, advertisement, or photo exists somewhere, it would be a welcome addition to this page.
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