Toshiba RT-100S

The RT-100S (also called the BomBeat L-01) was an entry-level boombox from Toshiba. The service manual says it's from 1981. It has 12cm speakers and makes 2 x 2 watts at 10% distortion. There were two versions, one with a 2-band tuner (AM/FM) and another with a 4-band tuner. The 4-band tuner version (shown below) has an additional toggle switch to select the bands.