Last weekend I finally got the chance to plug my Digitech GSP1101 processor into my Fender Hot Rod Deluxe. Wow. It sounded awesome! The Marshall JCM900 simulation and other high gain amps sounded very smooth and realistic. I was debating selling this GSP1101 because I was not pleased with the tones with it coming straight from my computer with no amp.
Anyways I just wanted to share, if you're considering it, be sure you have a solid amp to play it through and you won't be disappointed!