This amp is the protoype for the the British Overdrive Series. Housed in a plywood it got that great 60's Marshall crunch! the buyer wrote:  "This is the amp I've been looking for, sounds amazing, a 15 watt plexi with a master volume. 2nd amp I've bought from Carl, I hope he gets as big as he deserves to be one day..and glad i bought a couple amps before he gets discovered and is able to charge twice as much.