Additional features include stereo outputs, tap tempo, a tuner, a noise gate, a headphone output, and a USB-C audio interface with re-amping capabilities. Add an optional expression pedal for volume control, or up to two footswitches to select presets or turn effects on and off. POD Express Guitar and POD Express Bass for guitarists and bassists 7 Amps, 7 cabs, and 17 effects, including a looper Stereo Main outputs and stereo headphone output USB-C audio interface for recording, monitoring, re-amping Powered by 3 AA batteries or an optional 9-volt power supply.