Multi- Verb Alpha 2.0 ART Used in a rack for P.A. , is a excellent sounding effects unit. Can be used for guitar or keyboards. Has a nice chorus,tremblo, flange, multiple pitch effects, vocal delay, reverb, stereo delay, phasing, and other special effects, automatic tuner,etc.Also have the reference manual. One owner bought new and works great. If interested please call -leave phone number and I will call you back. Thank you.