The Yamaha DX100 is an FM synthesizer released by Yamaha in 1986. It offers four operators for each of its eight voices, and has eight algorithms. It has only 49 mini-keys, and no arpeggiator or effects, but is still useful, known in particular for its bass patch #1.
Polyphony - 8 notes
Oscillators - Compact Digital 4-operator FM synthesizer
#Instruments - Monotimbral
Keyboard - 49 key 'baby-sized'
Memory - 192 presets, 24 user
Control - MIDI (w / Velocity and Aftertouch)
Date Produced - 1985
Condition: Excellent, DC 12V power adapter not included, can also be battery
powered. Pre-Owned
Info from Yamaha