Yamaha FB-01 Digital FM Sound Generator Synth Module, Works Great!

Vintage Yamaha FB-01 FM Sound Generator Japan FB01 Frequency Modulation

Roland MT-32 Digital Desktop Synthesizer with Display Screen for Parts or Repair

Roland SC-55 Sound Canvas GS MIDI Sound Module General MIDI Rack – AS IS

Yamaha FB-01 Sound Generator Digital FM Synthesis Modul

YAMAHA FB-01 FB01 FM Sound Generator Digital FM Synth Module

Roland U-220 PCM Sound Module Rack Synthesizer

Vintage Yamaha FB-01 FM Sound Generator Japan FB01 Frequency Modulation