I'm sure there are some Ampeg aficionados out there who can answer this, so thanks in advance. I was in GC yesterday and they had some of the new Ampeg combos. I plugged in and tried one out and it had a really nice sound to it that I would describe as deep and kind of grindy (technical terms I know). I used to have a PF head and 1x15 cab and I moved it along because I thought it was pretty sterile sounding. Not at all like the combo I tried. So my question is... Was I just hearing things or are the guts of the new combos different or have different characteristics than the PF heads??