The Zoom G2.1U is a multi-effects pedal that can be used both live and in recording settings, producing the same effects and sound-quality in both situations. The G2.1U digitally simulates analog sounds and effects for nine effects modules, totaling 54 types of effects like delay and pitch shift. With an expression pedal, chromatic tuner, drum machine, USB port, and optional footswitch, the G2.1U is considered extremely versatile.