Roland Xps-30 Expandable Synthesizer Keyboard - BlackMODEL Roland XPS 30 BRAND ROLAND PRODUCT SYNTHSIZER KEYBORD COLOUR BLACK SPECIFICATION Large dial for selecting sounds. I O Connections: Output (L Mono, R), Phones, MIDI (In, Out, Thru), Computer interface (Mac PC1 PC2), Control pedal, Hold pedal. There are 4 sliders on the XP 30 which control envelope settings, tone volumes, and 4 user assignable parameters. To Host connection for hooking the device up to a computer. This is mainly used as an