I have an lme49720ha for both of the opamps. I assume they are the same as your lme9720has? Mine are the metal ones attached to dip8 connectors. Anyways, if you replace just the headphone opamp with the 9720 what dc offset are you getting?

Quote:   Wow sorry for insulting you. Moving on.  

I have spdif on my motherboard. Any reason why the xfi would be better than the mobo? I don't love the win7 xfi drivers and wouldn't mind trashing the card all together.

Last.fm for me too. YouTube has a lot of music on it as well.

I always found the violin to be the saddest of the classical instruments. It may be modern but the Schindlers List song, played by Perlman gets to me. Sarah Changs Vitali Chaconne, is also pretty emotional.

Does it matter which source from my computer I use to feed my dac. Using windows 7. Source can be from either my xfi xtrememusic or from the onoard realtek. Since it is digital I suppose it might not matter?

I have read most if not all of this thread. I do not see a consensus on which if any opamps are better than the stock amps. Is it worthwhile to switch them? Should I switch the dac and amp? Any all around goto opamp for hd650s? Thanks!