DMX Digital Drum Machine DS 2 Digital Sequencer DSX Sequencer KX Master Keyboard Matrix 1000 Synthesizer Matrix 12 Polyphonic Synthesizer Matrix 6 Polyphonic Synthesizer MS 1A Sequencer OB 1 Synthesizer OB 3 2 Drawbar Organ Expander OB 8 Polyphonic Synthesizer OB X Polyphonic Synthesizer OB XA Polyphonic Synthesizer Prommer Midi Sampler | Prom Programmer PS 1 Phase Shifter Ring Modulator Ring Modulator SEM 01 a Synthesizer Xpander Six Voice Synthesizer