Single channel, window rattling, neighbor calling the police, club owner screaming it's too loud, soundman's nightmare of an amp. More balls than any Marshall I've heard. There are more versatile amps out there, but when you need muscle, do you call the guy who claims to know all the best fight moves or the guy who punches him in the face with one shot? Yeah, fight over. The "M" in the VTM is for modified. The dip switches allow you to make your own mods and shape the size of your audio fist. You'll win the fight with this 120 watt metal head.