The Marshall Power Brake is a simple solution to an age old problem… Your valve amp just doesn’t sound the same at low volume!? With the PB100 Attenuator, you can fit this between your amplifiers speaker output and your cabinet to work like a master volume and tame the earth shaking volume without loosing all the marvellous tube-tone in the process! Turn any high-powered vintage valve amp into a workable home or studio friendly workhorse with the Marshall Powerbrake!