Oh, yeah...and there's loads of potential sidecar-type racks out there, so find one that fits. Plus, since that Alesis uses the typical mono-send/stereo-return setup you find in small mixers, you can snag a couple of FX processors in that format to go in there as well. In fact, one of those has been a fave of mine since the mid-1980s: the Yamaha SPX90. Not only is it versatile and stoopid-easy to program, it's the source for a LOT of electronic music FX over the years. The most famous example might be Brian Eno's "Thursday Afternoon" reverb, as the SPX90 can do that 70-second reverb time at the push of a button or three. Plus, outboard gear has gotten crazy-cheap due to everyone being all hot 'n' bothered about FX being "in the box", so take advantage of that if you're able.