Extremely powerful flagship reverb unit by Boss meant to rival other heavyweights like the Eventide Space and Strymon BigSky. Includes various delays that can be selected and switched on/off simultaneously with some incredible reverbs that range from milder but beautiful studio staples (the SRV-2000 patches are especially nice here) to expansive and heavily modulated reverbs stacked on-top of each other (The Moonlight, Morning Glory, and Bad Morning patches simply must be heard). A third switch can be programmed to modulate patches as it's pressed in various ways. Any patch tweaker's dream. MIDI implementation as well. Includes everything in the original box. Has stayed in my home studio all its life. Treated with the respect it deserves. No scruffs or defects of any kind.