Opcode Systems Studio 3 Rack Mount MIDI Interface Synchronizer SMPTE r1

Opcode Studio 4 MIDI Interface

Opcode Systems Studio 3 Rack Mount MIDI Interface Synchronizer SMPTE r1

Opcode Systems Studio 4 Midi Interface

Cakewalk By Roland V-STUDIO 20 USB MIDI Audio interface Control Surface VS-20

M-Audio MIDIsport 4x4 USB MIDI Interface 4x4 In/Out Studio Controller - used

OMS Studio 4 Midi Interface