Yup, I'm a picky one. All of the above amps are fine. But I still think I liked my Just Audio AHA-120 (now sold off... sigh) better than all of the above amps w/ the HD650. The dynamics of the AHA-120 were just really good for a portable and I thought I'd have no problem getting a budget desktop better than a portable, since I didn't need an expensive portable amp! I really liked the synergy between the AHA-120 and the HD650. It was a remarkably transparent amp that still had some sparkle in the treble and heft in the bass, while letting the HD650 mids be themselves. It was a winner and now I need to replace it.
I know lots of you haven't heard the AHA-120 but here I am. The O2 was not bad but felt thin and constrained; the E9, Asgard and P4 were all fine, with lots of raw power but were lacking finesse. They all seemed less nuanced than the AHA-120.
I've read a ton of threads. What am I missing? Am I out of options?
Probably looking under $200, with maybe some flex. I've got an ODAC now but I'd be willing to get a combo unit if it were the best option ($300-350). No desire for it to be portable, though am fine if it is.
Edited by imackler - 8/29/12 at 1:45pm