The Okto A percussion pad set features 8 high response, hard wearing, user configurable rubber pads. 2 switch pedals to control bass drum and hi hat. 408 drum voices, 30 preset drum kits, 20 user drum kits. Record, playback, demo and teaching functions including powerful step by step snare, rhythm and complete drum set practice/teaching modes. Easily reversible pad interface to suit left & right handed drummers at the press of a button. 5V Micro USB power input for portable use via an external mobile power bank. USB connection for sending and receiving MIDI data. Bluetooth MIDI data transmission to connect to your favourite drum tutor software. And expansion sockets to connect external pads, cymbals and pedals for greater flexibility. The sound of the drum kit is delivered via the headphone socket to a set of headphones or to a drum amplifier via the line output