The V-AMP PRO's 32 amp models are organized into four groups: CLEAN, BLUES, METAL and ROCK. Just twist the dedicated dial to plug into unbelievably authentic simulations of the greatest British and American tube amps from the 1950s to today. You even get models of uncommon—yet renowned—boutique tube amps! When you select an amp model, a speaker cabinet model is automatically selected. But if you'd prefer a different model, just go to EDIT>CABINETS, then use the BANK UP/DOWN buttons to navigate through all 15 options. Just like on an actual guitar amp, you've got a three-band EQ, GAIN, REVERB, VOLUME and MASTER VOLUME dials. By holding the TAP button, the TREBLE dial becomes a PRESENCE control. This enables the adjustment of a high-frequency filter that can add or remove a "shimmer" from the V-AMP PRO's tone.