Sony ST JX22
A compact AM-FM stereo tuner from Sony’s early 1980s lineup, featuring LED-assisted tuning and a space-saving thin front design.
Overview
The Sony ST JX22 is an AM-FM stereo tuner. It features a minimalist, thin front-end design typical of Showa-era Japanese audio equipment. Operation is simplified with LED indicators that guide tuning — users adjust until the signal indicator turns green for optimal reception. The unit includes a 3-point LED signal strength display and a simultaneous switching stereo/mute function. It was designed for straightforward integration into stereo systems of the period.
Specifications
| Frequency Range | FM 76–90 MHz, AM 530–1600 kHz |
| Practical sensitivity | 1.8 μV (IHF), 10.3 dBf (new IHF) |
| Stereo distortion factor | 0.3% |
| Effective selectivity | 60 dB |
| Separation | 45 dB |
| Power consumption | 7 W |
| External dimensions | Width 430 x Height 55 x Depth 310 mm |
| Weight | 2.6 kg |
| AM tuner IC | LA1245 |
| Original price | ¥23,000 |
Design
The ST JX22 uses a thin front-end layout for space efficiency and features LED-based tuning guidance. A 3-point LED signal indicator helps users achieve accurate tuning, while a simultaneous stereo/mute switch improves usability. Its design reflects a modern retro aesthetic common in Japanese electronics during the Showa era.
Market
A used unit was listed for CAD $20 and marked as "SOLD," indicating some secondary market activity. Another listing described a unit in "7 - Good" condition sold for CAD $12. The tuner has appeared in listings labeled as "Junk," suggesting it is sometimes sold for parts or restoration. A service manual and troubleshooting guide are available, supporting repair and maintenance efforts.
eBay Listings
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