The Red Panda Context is a studio-quality reverb that places your instrument in a room, hall, cathedral, metal plate, or less natural surroundings. All of the algorithms are adjustable so that you can get the right combination of pre-delay, reverb time, and frequency response. The plate algorithm gives you control over low- and high-frequency response for crisp, defined reverb even with bass instruments. Gated reverb gives you big booming drums from the 1980's, but is also great for adding power to guitar while maintaining transparency and space between notes. Finally, there is delay plus reverb for that versatile combination in a single pedal. This pedal is in excellent used condition, and comes with the original box. Powered by a 9 volt battery, or 9 volt power supply.