Just hooked up the guitar, plugged it into the amp, turned everything on and, man, somebody's going to have get out the contact cleaner and clean up these knobs. It works. Not the greatest chorus/vibrato I've ever heard but it works. I'm surprised. It's been sitting around here for more than a decade and who knows how long it was before that that anybody used it?Anyway, it's as is, where is and wherever it winds up. The only guarantee I'll give you is that if you pay for it I'll send it to you (if you pay the postage, that I'm going to set at $20, because it's not really heavy but it will need to be safely padded) and that today, when I plugged it in, it worked just like an old effects box from the '70's, when effects were cooler and new sounds abounded. If that's a word.