Howdy,   If you wish to use the HX Stomp as an IEM units to play live or rehearse with In Ears headphone,.     Here's how to achieve this.   Use an Send block (mono) at the end of your chain. Use the Send output to set to FOH or DAW to record   You don't have to plug anything in the Main OUTS. Main outs will include the playback coming from the console or mixer.   Use the Aux IN inputs on the side of the unit from the mixer to the HX Stomp. Set