I want to comment on LME49720NA, after listening to it for a few days I prefer it to stock 5532. Some people may find lme to have less bass and mainly not as in your face mids, that doesn't bother me, coz I'm listening mainly on RE400 which is I would say little mid-centric with well extended bass. I find bass on the lme to be accurate and heard when you need them. AND the highs and the soundstage is much better and open on lme
Only downside being the "bubbling" background noise, which can be heard in quiet parts of music. This noise may be reduced when I change power cap, am I right?
I wish I could AB opamps with another nut like some of you guys
Hope my short impressions can help someone.