Using JFET technology, TAW tried to stay loyal to the tone and feel of the following legendary Marshall™ amps: the non master volume series PLEXI™ Super Lead (1959/1987) & Super Bass (1992) and the master volume series JMP™ & JCM800™ (2003/2004).TAW emphasized on emulating the compression and sag coming from the power amp section, when these amps are pushed to the edge, while at the same time giving access to two famous mods, mod #39 (PLEXI™) and mod #34 (JMP™ & JCM800™). Of course the manifestation of love for the late great Eddie Van Halen, who created the so called “brown sound” using an ohmite variac (variable transformer used to lower or raise the voltage going into the amplifier), could not be absent from this endeavor.Finally, Presence control to make the sound adjustable to any circumstance, regardless of whether you are plugged into the front of an amp that may or may not have a bright cap or even straight to a power amp.Type: BoostTrue Bypass: YesColour: BlackControls: MasterControls: VariationControls: VolumeControls: PresenceControls: BassControls: MiddleControls: TrebleBattery Operation: NoUSB: NoPower Supply: AdapterPower Supply: 9V DC ( - )UK/EU Power supply included: NoNumber of Buttons: 2Made in: GreeceHeight (mm): 123.0Width (mm): 73.0Depth (mm): 56.0Weight (g): 314.0Inputs: Jack 6,3 mm TSOutputs: Jack 6,3 mm TS