Originally Posted by Scott549
And I assume you are claiming it gets better, not worse, right?
So you are saying that FutureSonics sells their IEMs in such a state that they sound significantly inferior to their intended sound out of the box. Why would they do that? Wouldn't it be easy for them to just run some sound through them for 50 hours before selling them?
Your EARS are what require the "burn-in."
Not always better (most of the time though), usually just different. Sound quality doesn't generally improve, more the sound signature changes.
As has been pointed out, nobody wants to pay for used equipment, nor does a manufacturer want to spend the cash to burn your equipment in for you.
As well, the Atrio M5 sounds amazing out of the box, and it only gets better over time.
Also, if that whole "EARS require burn-in" thing were true, I couldn't listen in the morning, leave for an entire day to work while letting the headphone burn in, then come back and listen to the exact same song/file and be able to tell such a difference.
I've also additionally proved this by buying multiples of the same headphone and testing a burnt in one against a new one (JLab Audio JBuds J2, for the record). Before and after burn in the sound is drastically different. Ask anyone who's also bought these.
All I'm saying is that dynamically driven IEMs change a lot within the first 24-150 hours (as a general rule), and armature driven IEMs either don't change at all, change very slightly, or change just over "very slightly" over the first 150-1000 hours (e.g. so little over so long you really wouldn't notice, and most or all of the change is likely happening in the cable, not actually in the driver). As far as armature-driven, the only one I've heard change significantly from burn in has been the Klipsch Image X10.