SONY SRS-20
¥ 8,800 (around 1983)
Commentary
Compact stereo active speaker system.
It has a built-in amplifier.
Model Rating
| Type | Stereo active speaker |
| Output | 200mW+200mW(PEAK) |
| External dimensions | Width 108x Height 70x Depth 19.5 mm |
| Weight | 150g (including battery) |