Not using as my two channel system but I have the HD6's and subwoofer hooked up to my iMac using a DragonFly Dac.
Music sounds great!
Any Audioengine fans?
I've been enjoying my HD6's for years since they first came out. Can't remember when. But with Apt X Buetooth, 150wpc class A/B power, a phono pre, and digital connectivity all built in for $699 I think they're pretty solid. And they look good! Used mine for a couple of years in my home office. Didn't sound great at first but they really opened up as time went on. They really need a small space and even then the bass extension really isn't there but that's to be expected at their size. I really like the rest of the sound though and I think a lot of that is due to the class A/B amps factory matched to the drivers. Like a lot of powered speakers they seem to offer a lot without the need for extra boxes and wires.
I do have better gear and rarely listen to the HD6's for 2 channel anymore. Moved them to the living room and I use them now mostly for light tv listening. And they also make my laptop sound great via bluetooth when I am in there gaming or watching Youtube etc. Don't even have to think about it they just play any noise my laptop makes and sound great. But every once in a while I plug my streamer in via toslink and enjoy them 2 channel. They've just been a great solution for me for several different uses.
Anyone else?