PIANOBOX USB The USB Pianobox turns each master keyboard into a full-fledged keyboard. Each guitarist can start their own session with the 100 internal drum patterns via guitar input! Now with an extra USB port and built-in class-compliant MIDI interface! Each PC recognizes the USB Pianobox as an external sound module! FEATURES. General MIDI sound module with 128 General MIDI sounds. and full implementation of GM. Variation sounds. 9 battery kits and one SFX set. Battery/metronome calculator with 100 drum patterns. Four digit blue display. HI-Z Guitar Input 6.3mm Jack Play/Stop button, SOUND/DRUM mode button. 10 function buttons for PRESET, VOLUME, TEMPO, REVERB TYPE and REVERB portions. MIDI input and output. USB MIDI I/O 6.3mm LINE OUT jack outputs. 3.5mm headphone output. Including free software pack Miditech.