I picked up this Pioneer cassette player and radio boombox a while ago and have experimented with it a bit. It powers on and is very loud! The radio works, but cassette player is not working. The Record switch is bent. This makes for a good radio and/or display piece. You can also use it as an external speaker by going in to the RCA Aux inputs. Fun and unique.

Wave bands -Broadcast (BC) and FM or UHF.

Power type and voltage - Line / Batteries (any type) / 120 / 6 x 1,5 Volt

Loudspeaker - 2 Loudspeakers

Material - Plastics (no bakelite or catalin)

Model: Stereo Radio Cassette Recorder SK-21 - Pioneer Corporation; Tokyo

Shape - Portable set > 8 inch (also usable without mains)

Notes - Pioneer Stereo Radio Cassette Recorder SK-21;
Ghettoblaster Boombox, level-batt. meter, mixing volume control, Nor/CrO2, stereo-wide, bass-, treble & balance control, two bult-in mics., song finder editor, tape counter, 14 W power consumption, made in Japan.
Terminals:
mix mic & rem. in, 2 x ext. mic in, Cinch AUX /I/O, ext. speaker, ext. antenna, DC in.