any EQ should be performed as close to the end of the hardware chain as you can. let the soundcard output as natural and faithful a signal as it can
eq doesnt get touched on mine
I'd been put off ordering the Xonar because I didn't like the thought of losing the "Crystaliser" sound effect on the X-fi. Out of interest, I went to the X-fi control panel just to have a look and found I'd been running with it switched off for only knows how long, so I obviously hadn't missed it as much as I thought I would.
On that note, my will power crumbled and I've ordered the Xonar D2X