Carl Martin Hot Driven Boost has been carefully designed to imitate the sound of a good old distorting Tube-Amp. The Hot Driven Boost is the perfect choice for that CRUNCH Blues-guitar sound, and also has loads of power for a great ROCK-guitar sound. With the BOOST device the Hot Driven Boost is a TWO IN ONE pedal. The Boost ranges from 0 to 20 dB, and is very useful in giving that extra kick for solos, PLEASE NOTICE the boost works both with or without the distortion activated. The Hot Driven Boost has a built in regulated -12V power supply. This enables us to design circuitry of the highest quality with maximum headroom. The low output impedance insures a no noise connection, and gives improved working conditions for the guitar amp.