I agree with several others that this thing sounds like ass straight out of the box. I played around with it for a few days, and what I thought was the speaker breaking in got a little better but still not great. I had an old Celestion Vintage 30 (8 ohm) laying around so I put that in just to see if things changed. To be honest, it didn't sound that different, still what to my ears sounded stiff and sterile. The only way I have found to get some very good presets is just play around with the settings until you find something you like. I almost across the board am adding more bass and reverb to every preset, and changing the cabs. Sounds nuts, but I have the 1x12 supersonic cab on the Princeton, and one of the 4x12 cabs on the 57 Deluxe. Changed cabs, gain and volume settings on several more presets. I am doing all this with an Esquire guitar and no pedals or effects, just the amp. I still think think these GTs show potential, but we will probably have to wait until a community of presets grows to work around the standard ones that come loaded in the amp.