If anyone's looking for an impressive DAC+amp combo that sounds great with the 650 (and that won't break the bank, relatively speaking).. I heartily recommend the Audio-GD NFB-11.32. I've had it for a couple of days and am quite pleased with how the 650 sounds off of it. I actually got this unit to pair with the LCD-2 (also a very good pairing).. but was pleasantly surprised w/ how it paired with the 650, too. The 11.32 can be used as a DAC & USB-to-SPDIF converter, as well.. so it can have a place in your system of you do decide to go in other directions for down/upstream gear.
Speaking of the LCD-2.. another one bites the dust! Yep, I enjoyed the LCD-2 a lot.. but after spending a good few weeks with it.. I prefer the 650 to it. The LCD-2 does excel vs the HD650 in some technical areas.. but judging both phones holistically, I find myself drawn to the 650 more.
Edited by FlySweep - 1/7/14 at 4:16pm