The Fishman AFX AcoustiVerb is an effects pedal for the acoustic musician that loves tasteful reverb combined with Fishman’s unique blending and voicing architecture. Three quality reverbs—Hall, Plate and Spring—are blended in parallel with your direct sound while preserving your acoustic tone. The Reverb Time knob controls how long you hear the effect, and ranges from short to very large spaces. Tone knob affects only the reverb and not your direct sound. Similarly, the Level knob adds the effect into your signal chain without overwhelming the sound of your instrument.