Revv's Purple Channel 3 is one of the most unique tones in modern amps. Extremely tight & clear with the right amount of saturation for any situation. Now that tone is available to everyone in a less-expensive pedal format that's versatile & feels great under the fingers. The aggression toggle is where the magic happens. The toggle switch has a blue and red option that'll give you a gain and volume boost to varying levels of intensity. Plays nice with:Combos, Heads, Pedalboard Rigs, in Effects Loops, w/ Cab Modeling. Form Factor:Small Single-Space Enclosure, Standard 9v Power (center negative 9v external power supply only), Durable Construction, Top-Mounted Jacks, Blue LED, Laser Etching. Mix-Ready --- Smart filtering keeps lows tight & highs present with no mud or ice. Feels Great --- Constant revisions ensured Revv pedals have inspiring attack & bloom, like your favorite amp. Versatile --- Fat and warm or tight & bright. Heavy amp-like saturation or light overdrive. Integrates Into Any Rig --- "Amp in a box" in front of a clean amp, another flavor of gain with a multi-channel amp, easy traveling, great studio tool, works great with analog & digital.