Volca FM is a 3-voice Yamaha DX7 emulator which can play any DX7 patches received through MIDI. It does not have a built-in FM programming interface, but instead offers some simplified macro controls to manipulate various FM synthesis parameters in real-time. Volca FM also includes a 16-step sequencer with Active Step and pattern chaining as well as an arpeggiator.
Volca FM can be powered using batteries or with a power adapter. It can be synchronized with other Volcas with the Sync connector or controlled using the MIDI input. It also has a speaker for mobile use.