Panasonic 8000X / Technics SA-8000X (c. 1973–1974)
The archive's raw fact file on the Panasonic 8000X is essentially empty. The period record shows this receiver was sold under the Technics name as the Technics by Panasonic SA-8000X, a four-channel/two-channel receiver from the early quadraphonic era. It was promoted heavily in the hi-fi press from late 1973 into 1974.
Panasonic's own advertising, for instance in High Fidelity (February 1974, p.91) and Audio (March 1974, p.59), claimed the SA-8000X could demodulate or decode any kind of four-channel signal. It had a built-in demodulator for discrete CD-4 records. It also had jacks for up to three four-channel tape sources, plus jacks for future discrete four-channel FM, a broadcast scheme that never really took off. The same ad copy quoted 80 watts per channel in two-channel mode ("double-power stereo") and an FM section using a MOS FET front end, ceramic IF filters, and 1.9 µV sensitivity. These are manufacturer claims, not independent measurements.
The one independent look located so far is an equipment profile in Audio (November 1974, p.46). The reviewer noted the SA-8000X did not use the advanced logic circuitry then appearing in some separate matrix decoders and all-in-one receivers. He described the upper dial area as carrying AM and FM dial scales, a signal-strength meter, and four illuminated VU meters. No full specification sheet, original price, or confirmed production dates have surfaced in the material on hand.
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