No. It won't pair well with the AKG 7xx line. I love my D7 and it sounds ab-fab driving my K550s, but it can't drive my K702s at all really. You need a D6 for the 702. That said, for headphones it can drive, the D7 amp section sounds better than that of the D6 to me. I ordered a Topkit for the D6 and specifically asked HiFlight to brew up something that sounds more like the D7 with the ability to drive the 702s.
But yeah, I feel like I'm getting an awful lot of value out of the D7 for the $100 I paid last month.
If you own 702s then you really need the D6 with a TopKit. Until this afternoon I was thinking that I was going to have to break out the wallet and pony up big time for the Intruder. Post Topkit - not so much.
BTW, I need to add my voice to whatever chorus there is on recommending the Kimber Kable USB cable. It does indeed make an immediately noticeable difference. It's both subtle and alarming all at once, and this is just with the Copper one. Definitely recommended.