# Connections and controls  | | | |---|---| | 1.) POWER | Press the button to turn on the instrument. Hold down for 2 seconds to turn off the instrument | | 2.) CHARGE | Connect the DC 12V adapter to charge the battery | | 3.) PHONES | Connect headphones (1/4“ TRS) | | 4.) VOLUME | Adjust the headphones volume | | 5.) LINE OUT | Unbalanced line outputs | | 6.) MIDI IN / OUT | Connect an external MIDI device here | | 7.) MIDI USB | Connect an external MIDI device through USB cable | | 8.) TRIG/EXPR | Connect an external trigger or expression pedal | | 9.) BLUE LIGHT | DC charger adapter connected | | 10.) GREEN/RED LIGHT | Instrument is turned on |