I've now tested them for about an hour, and while the general audio quality impression is absolutely lovely, clear, superb vocals and very open (for a set of closed cans), there is a very audible rattle from the right speaker on everything bellow 100Hz, even on low to medium volume, wireless and wired. Such a disappointment. This is my first experience with Beyerdynamic, and while I've read about QC issues with the Amiron Wirelss specifically, I don't know if this is to be expected across their whole product line.
Again, this is just the initial impression, but the comfort is also pretty meh. Compared to my Fidelio X3, it is night and day. The lack of clamping force is definitely real and it affects the comfort (not to mention the audio quality, tho I must say, my first impression is that the low-end is decent anyway, despite getting way better when applying additional clamping pressure with my hands) as long as you're not sitting absolutely still. The ear-pads are also quite hard. Too hard to be fully comfortable and hug the head.
Lastly, the power button. Many have mentioned this, but I thought, how bad can it be! The button is near unusable. It's flush with the body, requires a lot of pressure to press, and is mushy as all hell, there is hardly any haptic indication that you've pressed it hard enough. You need to rely on the led light, while covering it with your finger. As far as a button goes, this is probably as bad as it can probably be. This combined with no sort of auto-off (I wouldn't expect wear sensors but at least auto-off after a few minutes of no signal) and the fact that you gotta hold it down for 6 seconds (but 6 seconds max, else you turn them back on), really makes me question whether this will be too big of pain to use daily. I can't stress this enough - and I can't believe I'm writing an entire paragraph about a ****ing button - this is by far the worst feeling button I've ever experienced on any type of gadget, ever.
Needless to say, they're going back because of the rattle from the right ear-cup, but my first impression is very underwhelming, which is sad, as their audio profile seems to be right up my alley. I really need to think hard about whether I should get them replaced or just returned. I'm leaning on returning them and looking elsewhere.
