I agree, you've got a pretty good setup!
I don't know what your speakers are, but my setup's similar to yours and sounds amazing with my MS Genies' tho I admit I prefer 5.1 sound!
What are you unhappy with?
Maybe we can help although I can't get on here too often (pooh work!) but give me a go? I'm a music-lover and (I've been told) audiophile ...... tell me what you expect and just MAYBE we can fix this?
With high-res. audio in stereo your setup SHOULD blow your mind!
My speakers are Wharfedale Diamond 9.1's - bi-wired with silver anniversary cable. I also have the Diamond 9 CS, and Diamond 9 SR's, but only listen to stereo in 2 channel pure direct.
Problem is that music sounds a little flat, with poor separation of instruments. Things like hip hop or dance (ie predominantly electronic) sound excellent with vocals also sounding good, but rock sounds poorly defined and guitars, drums etc have a tendancy to blend together. I find i'm falling into the 'constantly edging the volume' up trap. It's lacking that thrilling 'punchy' quality if you get what I mean.
The 1920 uses Burr Brown 1608 DACS, but is not reckoned to be particularly great for 2 channel stereo. I've A/B tested the Burr Brown DACS from the 1920 against the 2805's AL24 DACS, and they are pretty much identical. All of which leads me to think that either:
a) The 2805 DAC's aren't that great either
b) There is some other limiting factor, like the pre-amp of the 2805. It is a receiver after all.
I'd be interested to hear if anyone has ever run a good quality source through the 2805, such as an external DAC or decent CD player, and how that has compared to the 2805 AL24 DAC's.
I want to know if I can get some more quality out of the system before I start thinking about changing the 2805 or getting an external integrated amp for music.