hmmmm..... imaging seems tighter and the soundstage seems much deeper and
WIDER... instruments are reaching well outside my speakers, much further than usual. I'm going to switch back to the 8ohm taps in a bit and see what I think of the differences but the 4ohm taps seems to have really brought my system to life...
edit: soundstage is a touch wider, not as dramatic as I originally thought... overall though the soundstage seems deeper, the imaging tighter, and the overall tonal characteristics seem cleaner with deeper bass when I'm on the 4ohm taps as oppossed to the (recommended) 8ohm taps...
I still need to do more listening but I've got to thank DUCATI for tipping me off to this tweak... much thanks