Wow. Amazing post. Where to start.
I've really had my eye on the HD650's because they tend to scale nicely and will still sound good if I ever want to upgrade my rig.
The Dennon's sound great, and I may end up getting a pair as well if I can find a good deal on an amp/Dac combo.
As far as what I've been looking at as far as amps are concerned, the first thing someone suggested to me was the
NuForce Icon HDP. I've also heard good things about the
iBasso D12. I'm wondering if the E9 has enough juice to power the HD650's? Perhaps you could help me out on this. Because if it can I would be open to pairing the 650's with the E7/E9.
I still plan on using my AD700's for gaming and movies, they are really excellent for gaming and I would suggest them to anyone looking for a pair of starter cans. This is why I'm leaning for the 650's over the D2000's.
My budget for a rig is around $1,000. I really want a good setup as I listen to music for 6-8 hours every day. I don't mind spending the cash because I recently stopped drinking, and I want to reward myself with a nice audio setup Thanks again for the help.