Realistic STA 20
A solid-state AM/FM stereo receiver sold by Radio Shack in the 1970s
Overview
The Realistic STA-20 is a solid-state AM/FM stereo receiver made by Radio Shack under its Realistic brand. Marketed as a compact audio solution, it was positioned against receivers like the Harman/Kardon 3308 in a 1976 budget electronics guide. The unit features a walnut grain case and delivers 7 watts RMS per channel into 8Ω, with a frequency response of 20–20,000 Hz. It was sold alongside other Realistic mini components, often paired with minimus-7 bookshelf speakers.
Specifications
| Power output | 7 watts RMS per channel into 8Ω (stereo) |
| Frequency response | 20–20,000 Hz |
| Tuning range | FM, MW |
| Original price | $159.95 |
Design
The STA-20 is a solid-state mini stereo receiver housed in a walnut grain case. Its power amplifier stage uses uPC1238 integrated circuits, one per channel.
Context
The Realistic STA-20 was listed in a 1976 budget electronics guide, where it was compared directly to the Harman/Kardon 3308 AM/FM receiver as a competitive alternative.
Market
Owners have reported issues such as crackling volume controls, with some noting the need for a full recap to restore reliable operation. The unit has appeared on the used market at prices ranging from CA$30 to $350, depending on condition. It is described in listings as "Excellent (Used)" and "Good Working & Cosmetic," with some units confirmed as tested and working.
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