Marshall has made this electric guitar amplifier. It has lots of knobs to change the sound with a digital display showing output and power values. It gives an authentic sound with 20-watt channels that can be switched between using a footswitch. There is a classic gain and ultra gain option. It has 3 x ECC83 amplifier lamps and 2 x EL34 tone shift buttons. There is a bass switch for independent bass volume and there are gain controls for both channels as well as tonal control. There are treble, middle and bass controls. Has an emulated line output and serial effects loop.