I just got a Princeton 65 Reissue and so far have not gotten it to play nice with the POD Go. I've bypassed the CAB/IR in the Global Settings but the vast majority of the presets - even ones I really liked - range from terrible to completely unusable. They all sound metallic with very high treble. It oftens sounds like I have fret buzz when it's not the guitar. I'd be open to any suggestions on how to make these work together. I was actually shopping for a Powercab and got offered this on a deal I couldn't refuse.
