The dial on the back allows you to choose what output level you wish to play at. The value can be from 1 watt up to the 30 watts as advertised. Actually, anything about 20-25 watts is too loud for the amplifier. Everything begins to shake and vibrate. Extra little bits of good information is to keep the amp off the floor for better sound and to try and keep the handle up away from the top of the box. This minimizes vibration also. A speaker change will do wonders for it's tone. I am sure daVooDoo will add his own findings on the AD30VT.
Guitars:
Electric: Washburn HB-30, Squier Tele Custom Deluxe, Jay Turser Strat.
Acoustic: Seagull S6.
AMPs: VOX AD30VT, Peavey Envoy 110.
Modelers: V-AMP 2, Digitech RP-100A.
Pedals: Boss RC-2 Loop Station, Boss CE-5 Chorus Ensemble, Digitech Bad Monkey, Ibanez DE7 Delay/Echo, DOD VFX40B 7-Band Graphic EQ, Ibanez CS-5 Super Chorus.