Greatly expanding the range and quality of sounds currently available to guitar players, the GR-33 employs an upgraded sound engine, new effects, amazing speed, and an enhanced user interface. Its sound source is equivalent to Roland's venerable JV-Series Synth module, capable of producing some of the richest, most interesting instrument sounds and lush effects around. Features include dedicated chorus and reverb processing, plus 25 multi-effects, massive wave memory, 350 stunning instrument sounds, an output select switch that allows use with conventional amps, onboard arpeggiator for instant creation of various arpeggios, a synth harmonist feature, assignable onboard expression pedal, and access to the world of MIDI music and computer-based sequencing.