Compact and powerful multi-effects with a simple knob-based interface; eight simultaneous effects categories, each with multiple effects types; updated flagship-level COSM amps derived from the GT-100; eight multifunction footswitches and expression pedal; manual mode for stompbox-style on/off; memory mode for switching complete patch setups; delay section includes Phrase Loop function with 38 seconds of recording; USB audio/MIDI interface built-in; free Boss Tone Studio software allows you to edit and organize tones on your computer, and also preview and download free patches directly from the Boss Tone Central website; runs on 6 AA batteries or optional power supply.