Let’s hear it for reverbs you can play, morph, squash, and swell — not just set and forget. That’s Intellijel Swells, the “Multi-Model Reverb Module with Swell Generator,” or perhaps more aptly, “a lush reverb with a bunch of faders you can jam on.” I’m all for reverbs that work as instruments everywhere, as anyone who talks to me about reverbs knows. That’s in contrast to the conventional reverb — so much as sneeze on something called “size, ” and you cause horrible warping effects. So you wind up ducking the decay and… that’s about it. This is different: make swells with an envelope follower, get your hands on parameters like ebb and flow, and generally tweak and patch control for everything.…