If a no-frills, earthy blues and rock sound is desired, you've come to the right place with the BD-2 Blues Driver. Slight distortion, fat overdrive and soft, silky sustain. The distortion levels can be set with Gain. The setting range covers slightly distorted to the hardest overdrive. Tone Control allows you to set a variety of classic sounds. Overall Level enables the adjustment of overall volume, regardless of the distortion.