ZOOM Multi-Effects Processor G1X FOUR 13 types of amp/cabinet models that faithfully emulate existing models Over 60 guitar effects, including modeling of famous boutique pedals The "G1X FOUR" incorporates over 70 amp/effect models and can use up to 5 simultaneously in any order. It comes standard with 13 amp models that faithfully emulate the internal circuits of real amps, cabinet models using advanced IR (Impulse Response), and over 60 guitar effects, including modeling of famous boutique pedals. Furthermore, you can download additional amp models/effects/patches distributed from the PC/Mac app "Guitar Lab" and install them on the main unit for free. It also features a looper function, rhythm machine function, tuner function, headphone jack, and AUX IN jack for inputting music players, supporting all kinds of scenes from everyday practice to live stages. Manufacturer...ZOOM