Overdrive distortion is a well-known distortion. While the general purpose is to emulate classic “warm-tube” sounds, distortion pedals such as the ones in this list can be distinguished from overdrive pedals in that the intent is to provide players with instant access to the sound of a high-gain Marshall amplifier such as the JCM800 pushed past the point of tonal breakup and into the range of tonal distortion known to electric guitarists as “saturated gain.” Although most distortion devices use solid-state circuitry, some “tube distortion” pedals are designed with preamplifier vacuum tubes. Some guitarists will use these pedals along with an already distorted amp or along with a milder overdrive effect to produce radically high-gain sounds. In some cases, tube distortion pedals use power tubes or a preamp tube used as a power tube driving a built-in “dummy load.” Pedals designed specifically for bass guitar are also available.