Stax DA-80M
Surviving documentation on the Stax DA-80M is thin. What the record shows comes almost entirely from Stax's own late-1970s advertising. That copy positioned the DA-80M as a monoblock class-A power amplifier rated at 90 watts RMS and aimed squarely at subwoofer duty. The company claimed a pair could drive virtually anything. The same ad copy ran in High Fidelity (November 1978, p.23), boasting that the DA-80M improved on Stax's earlier class-A designs with a faster slew rate, better transient coupling, and intermodulation/harmonic distortion below 0.007% at 20 kHz. Audio (October 1978, p.76) also listed the DA-80 among contemporary amplifiers in a survey, with no further detail.
Known specs from the period ads:
- Mono (single-channel) power amplifier, class A
- 90 watts RMS
- Advertised for subwoofer use; a pair recommended for stereo or multi-amp systems
No independent review measurements or meaningful owner history have surfaced in the archive so far.
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