Alesis MidiVerb 4 Digital Effects Processor Studio-grade effects algorithms produce dense, natural reverb, rich chorus, flange, delay, pitch effects and up to three simultaneous multi-effects. 18 bit A/D ~ D/A converters and 24 bit internal processing for a 20Hz-20 kHz bandwidth and 90dB dynamic range, ideal for digital recording. 256 programs with 128 spaces for user-created fully programmable effects, many using true stereo parallel processing. MIDI controller routing and assignable foot-switch input, for complete creative and real-time control. Maximum delay time - 1,299 ms, Maximum pitch shift range (octaves): 1 octave, Overload Warning 18-segment LED clip light.