Alesis Quadraverb  stereo effect unit

Machine info:

The Alesis Quadraverb is a stereo effect unit that allows up to four digital effects to be used simultaneously (Reverb, Pitch Change, Delay, and EQ). The signal path is programmable, and many of it's parameters are accessible from real time controllers. The unit contains 100 programmable patches numbered from 0 to 99. 90 factory patches held in it's ROM may be called up at anytime individually or all at once.