Nux MG-20 Electric Modeling Guitar Multi-Effects Floor Guitar Effects with Drum Machine and Looper Function. The floor guitar processor with 32bit float point dsp equipped and true simulation of analog circuit Up to 60 effects models, 60's loop, sample-based drum machine and mp3/wav player Tap the delay time and modulation speed, or play/stop backing track Built-in MP3/WAV Player,USB port allows to update the system and edit tone on your computer Scene selecting to match the equipment