Key modules include NR (gate), PRE (compressor, boost, whammy, octave, EQ), DST (overdrive, fuzz), AMP (17 classic amp preamp models), CAB (15 excellent IR samples, 15 customizable IR slots), MOD (chorus, flanger, phaser, vibrato, tremolo), DLY (pure, slap, warm, mag, reverse, sweep), and REB (air, room, hall, plate, spring, dream).