CASIO VL-1 - VL TONE (1981) The Synthesizer in the Pocket Calculator - How make own sounds? - YouTube
HELP. CASIO VL TONE) I plugged a small speaker w the line out and now it only works with the speaker/amplifier, doesn't sound by itself, calculator/display works fine. (Read comments) : r/synthesizers
Casio VL-1 VL-Tone 29-Key Synthesizer Keyboard | Reverb Australia