Device Connector: micro-USB MIDI Input: 2.5mm TRS Jack MIDI Output: 2.5mm TRS Jack Headphone Stereo Output: 1/8 TRS Jack External Pedal Input: 1/4" TRS Jack Volume knob Octave up/down buttons Program up/down buttons Setup button 1 assignable data push encoder 4+4 assignable knobs Conversion: 16 or 24-bit D/A Sampling Rate: 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz Power: USB bus powered when used with computer or mobile device, USB power supply or USB battery packs Lightning to micro-USB connection cable (60cm/23.6") USB-A to micro-USB connection cable (60cm/23.6") 2.5mm TRS male to MIDI female adapter (10cm / 3.9") Dimensions; 518mm/20.4" x 139mm/5.5" x 40mm/1.6" Weight: 0.87kg/30.7oz"