Made to Edward Van Halen"s exacting specs. This is the exact amp used in the studio and on stage by one of the only true living legends of the guitar. * Heavy duty hardware and construction, vertically-mounted preamp tubes with premium sockets. It"s rugged and roadworthy! * Custom made transformers and special biasing help achieve Edward"s fabled Variable AC effect. * Lower-noise preamp circuitry. Less hiss & hum than many ultra-high gain amplifiers. * Step on what you want footswitch with color-coded LEDs: instantly select any of the three channels with one button push; selection is easily visible on a darkened stage; FX loop can also be selected.