Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

I'm fairly new to the 2101 and only bought it a few weeks ago, but I'm
getting a nasty high pitched squeal and random noise with almost every
patch I use, particularly the high gain patches, both user and
factory...I've got a 2101 Studio with added PPC210 and artist 3.00
upgrade...any ideas? It sounds horrible and is making it unusable.

Shannon