Eventide Spring :
Spring Reverb models the sound and character of popular spring reverbs found in guitar amplifiers, popularized by Surf, Garage and Rockabilly music.
Spring takes this a step further by allowing manipulation of physical parameters not normally available in a real spring tank. The results vary from faithful recreations of real springs to distinctive new sounds that push the physical boundaries of reverb. Guitarists love the revered surfer vibe but all creative musicians will find that Spring makes any synthesizer, drum, or vocal stand out in a mix.