According to RME web site, the 9632 features "Speaker Protection minimizes noise during power on/off". After replacing a delta 410 with the 9632, I left my active monitors on while turning my PC on/off and the resulting crashing/thumping noise was so loud I thought I'd killed my monitors (no harm done, but a big scare). Actually it was much louder than with the 410. Maybe there's something to do to activate the speaker protection, I've asked the question to RME support, will let you know.
That's my only complaint with the card so far which I find close to perfection otherwise. Sound is crystal clear and drivers are rock solid. Used PowerDvd 5, Foobar and Synapse Audio's Orion, everything worked fine and there's a definite improvement in sound quality (at least with my monitors).
Not sure it is worth it if the rest of your gear is not on par.