Send your sound straight into the heart of a modulated maelstrom with the TC Electronic Thunderstorm Flanger Pedal. Designed to emulate the sounds of the original flanging pedals from the late '70s and '80s, the Thunderstorm features a four-knob layout of Rate, Depth, Manual (delay time), and Feedback knobs which go everywhere from a subtle jet effect to swirling psychedelia to Police-like pseudo-chorus. Built on the foundation of real bucket bridge analog circuitry affording reams of depth and character, the Thunderstorm is a weather system of sound in a box.