Apogee Duet 2 USB Audio Interface Sound Card 2-INPUT/2-OUTPUT

Onyx Producer 2X2 USB Audio Interface with MIDI (Onyx Producer 2-2)

M-Audio M-Track Plus Two-Channel USB Audio/MIDI Interface,Microphone,Headphones

Tascam US-122MK II USB 2.0 2-channel Audio/MIDI Interface Tested & Working

Solid State Logic SSL 2+ MKII USB Audio Interface 2-Channel

Tascam US-428 USB Digital Audio Workstation Controller Midi Interface

4 Octive Midi To CV Interface . 5vGate, Note To CV. Control Voltage. 2 channel

Alesis io26 Firewire Audio/MIDI recording Interface. Tested Working