I'm looking for some advise on an audio upgrade. I have lower end Adcom (stereo) components (10 years old), a powered subwoofer, and a cd player. I listen to cd's. I'm interested in moving to a setup where I store my music on my computer and access wirelessly. If I go with Apple TV, the DAC will be a big issue (I'm thinking optical out to a pre-amp). I don't have plans to add speakers and I suppose I will run my TV/DVD sound through whatever I end up buying, but HT is not my main concern.

Option 1: 970 + 7075 or 7125
Option 2: 990 + 7075 or 7125
Option 3: some other AV receiver or components
Option 4: stick with the adcom pre-amp, replace the stereo amp and buy a separate DAC to run the Apple TV through.

Any thoughts/suggestions?