Phase Linear PLT-150 (circa 1987–1988)
Documentation on the Phase Linear PLT-150 is thin. What survives is mostly the company's own advertising from late 1987 and early 1988. The ads sold the PLT-150 as a car audio power amplifier in the "PLT Turbo" line, and the central pitch was that this amp changed the meaning of "peak performance in an automobile."
Phase Linear's advertisements, including one in Audio (February 1988, p.91), described the PLT-150 as switchable into a "monobridged" mode. In that mode it delivered a boosted 90 watts RMS / 180 watts peak through one channel to a single speaker. The same ad copy argued that the only thing better than one PLT Turbo amp was two of them, which was aimed at buyers running amps in pairs.
A High Fidelity report (March 1988, p.41) put the amp in the context of the company's "checkered" but honored past and its founding by Bob Carver. The accompanying measurements showed very low distortion, remaining below the reporting threshold up to nearly 1 kHz.
Beyond that, little is recorded. No production years beyond the ad run, original price, or detailed engineering specifications have surfaced in the archive's files.
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