Features: 2 Working Modes: Vintage / Turbo Vintage: A warm, smooth, vintage distortion sound; Turbo: More powerful distortion sound, twice more than the maximum output of the vintage mode. True bypass design to minimize the tone loss. Mini size, compact and space-saving. Aluminum alloy case with stove varnish finish. Level, Filter, Distortion Controls: Level: Adjust the level of the distortion sound; Filter: Adjust the tone color of the distortion sound; Distortion: Adjust the gain of the distortion sound.