Yeah I noticed earlier in the thread someone mentioned the $379 sale. Woops. I assumed that was the normal price so I am glad I got them when I did.
I am not as scientific or well-versed as many of you, but these are the best headphones I've ever heard. My daily driver was previously the HD6xx, but I now understand the "veil" people refer to, the level of detail in the Aeons is far better. I have always wished I could have headphones with as much detail as my IEMs, and I have that now, I actually think I can hear a bit more in the Aeons than my Fiio FH5s which I love. I am running these through a Fiio K5 Pro DAC/Amp, and have also used my Fiio BTR5 bluetooth receiver (which DC recommends over in the RT review thread), and was surprised that it seems to do it justice even with single-ended output (volume maxed, gain on high).
Mine came with the sliders on the headband loose, so it wouldn't stay in place on my head, but a quick tightening with a philips head screwdriver and they are good to go. I actually like this because if you want to "lock in" your adjustments you can just tighten it more so it is difficult to slide. They are super comfortable, no complaints here at all.
I am running EQ, I use Sonarworks and since they have the Aeon Flow in their database but not the RT or obviously this, I tweaked it to match Amir's EQ for the RT. I am however operating under the assumption these are the same as the RT due to
@Dan Clark's comment that they are "very similar," over in the RT review thread. If they are different I imagine its less than I will hear in every day use.
Without EQ they sound more U/V-shaped to my ears, the soundstage seems enhanced, but I don't get enough of the mids. This is all very subjective and I have a small foundation of experience, so take this with a large grain of salt. Anyway, running them with the same EQ as recommended for the RT sounds "right" to me, and using my usual bass shelf makes bass too much.
I wanted closed headphones that sounded good and I got my wish, they are even better than my open headphones. Super happy with these, and going to keep a close eye on DCA in the future.