Features Works with iPhone, iPad, Android, Mac/PC Lightning, USB-C** and USB-A cables included Headphone out for use with the latest devices Compatible with all your favorite apps Stand-alone mode for use with outboard rigs 2.5mm MIDI IN/OUT with MIDI adaptor included SET button to save & recall custom setups Powered by your device or USB power Specifications Keyboard iRig Keys 2 Pro: 37 full-size keys with velocity Connections 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 (only iRig Keys 2 and iRig Keys 2 Pro) Controls Volume knob Octave up/down buttons Program up/down buttons Setup button 1 assignable data push encoder 4+4 assignable knobs Pitch bend wheel (only iRig Keys 2 and iRig Keys 2 Pro) Modulation wheel (only iRig Keys 2 and iRig Keys 2 Pro) Common 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* (see note)* Note: iRig Keys 2 sinks very little current from the power source to maximize battery life. However, some USB battery packs may automatically switch off when the load is very light. If you plan to use iRig Keys 2 in stand-alone MIDI mode powered by an USB battery pack, make sure you use one that can stay ON even when nothing is connected. Package Includes iRig Keys 2 or iRig Keys 2 Pro keyboard (depending on the version) Lightning to micro-USB connection cable (60cm/23.6) USB-A to micro-USB connection cable (60cm/23.6) USB-C to micro-USB connection cable (60cm/23.6) (only iRig Keys 2 Mini) 2.5mm TRS male to MIDI female adapter (10cm / 3.9) Dimensions Size: 605mm/23.8 x 212mm/8.4 x 77mm/3.03 Weight: 1.87kg/66oz WATCH: iRig Keys 2 - Play your own way