Toshiba SA-620 (c. 1977)
Little is documented about the Toshiba SA-620 beyond a 1977 equipment directory listing and Toshiba's own contemporary advertising. What the record preserves is a well-featured AM/FM stereo receiver. The period directory carried it with a 41-position click-stop volume control, click-stop tone controls, high- and low-cut filters, a loudness switch, FM muting, a Dolby circuit, two phono inputs, an aux input, two tape inputs with two tape monitors, and main/remote speaker switching with circuit/speaker protection. HI-Fi-Stereo-Buyers (1977, p.61) listed the SA-620 in a walnut veneer cabinet with an extruded aluminum control panel at $449.95. It gave IHF FM sensitivity as 1.9 µV, capture ratio 1.5 dB, selectivity 65 dB and image rejection 60 dB. Signal-to-noise was 60 dB on phono and 70 dB on tape/aux.
Toshiba's own campaign pitched the SA-620 as a receiver built to sound like separate components. It claimed an IHF sensitivity of 1.8 µV - "conservatively" - and the same 65 dB selectivity and 70 dB signal-to-noise figures the directory gives. That advertising ran in High Fidelity (November 1977, p.132) and elsewhere.
Known specs from the period directory:
- AM/FM stereo receiver; output rated over the full 20–20,000 Hz band (per-channel wattage not preserved in the surviving scan)
- FM sensitivity (IHF): 1.9 µV per directory; 1.8 µV in Toshiba's ads
- Capture ratio 1.5 dB; selectivity 65 dB; image rejection 60 dB
- S/N: 60 dB phono, 70 dB tape/aux
- Two phono, one aux, two tape inputs; two tape monitors; main/remote speakers
- Dolby circuit, FM muting, loudness control, high/low filters, circuit/speaker protection
- Walnut veneer cabinet, extruded aluminum control panel
- List price: $449.95 (1977)
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