I just got a new Small Stone and went to try it out on my relatively new AC15C1. It sounds great but in between phase swells I noticed a slight buzz. So I switched to my strat to try it in position 2 and see if it could be coming from my guitar, nope still there. Switched to a guitar with humbuckers, still there. At any volume even approaching 12 noon it sounded like some alien dial-up program is running through my amp, horrible. I haven't tried changing the tubes yet which is going to be my next move but I'm wondering if you guys have any idea what this could be or if anyone might have had a similar problem. Any help would be appreciated as I'm pretty bummed right now and I'm hoping I won't have to return it or get it sent away for a month.