CME UF50 Classic, USB Midi master Keyboard, 49 keys semiweighted action keyboard with aftertouch, 9 Fader, 8 Potis, Pitch- and Modulationwheel, Breath-Controller Connection, Sustain- and Expression-Pedalconnection, 6 Function Buttons free allocatable, MIDI I/O, USB-Connection (Class Compliant for WIN XP and MAC OSX), firewire digital audio 24bit/192kHz stereo I/O interface or with optional Soundmodul expansibility. Dimensions / wight : 859 x 348 x 113 mm, 8.2 kg