The only DT770 that will work well with the Xonar DG is the 32-Ohm version (bass light), not worth it.
The Audio Technica will not improve a lot with a headphone amplifier.
(but I'm sure the E10 will improve the sound quality of any headphone)
I still say get the DG and SR850
Total is $70
That should keep you happy and you can wait for the higher end headphone to go on sale somewhere.
Prices drop and new products come out in Feb, March, April
Right after Christmas and until tax time, people do not buy much
Prices have to drop to sell anything.
No one will announce new products till after the Christmas season, they want to clear out current products first.
People stop buying current products if they know something new is coming out.
Audio Technica just came out the new A700X, should be better then the current A700.









