The amps were developed out of the original Marshall circuitry to enable the musician to reproduce the classic Marshall overdrive sound at any volume level. By varying the pre-amp volume, and master volume controls the sound can be varied from a clean crisp sound to a rich overdrive sound at a controllable volume.
The master volume series have twin inputs, one having greatly increased gain. Both channels mix into the usual Marshall tone circuitry of treble, middle, bass and presence control.
The master volume series have twin inputs, one having greatly increased gain. Both channels mix into the usual Marshall tone circuitry of treble, middle, bass and presence control.