Roland Fantom-XR sound module - 1U rackmount synthesizer/sampler with capacity for over 1GB of sounds - 128-voice polyphony and expressive 4-tone stereo multiplex synthesis - USB port and optional PC Card storage with up to 1GB capacity - 2 stereo (4 mono) analog outputs, stereo analog input, plus S/PDIF digital I/O - MIDI in/out/thru, 2 stereo (4 mono) analog outputs, stereo analog input, plus S/PDIF digital I/O.