Has anybody else had issues with the GR07 "losing" the sound it settles into after burn-in? I've got well over 300 hours of use on mine, but after not listening to them for a few months and them going back to them they were very bloated, congested and excruciatingly harsh up top. I thought it was just because I was coming from the RE0, but after listening to the GR07 for a few hours they leaned out, opened up, and smoothed back out on top. I even A/Bed them with the RE0 again to see if it was just my brain acclimating, but it wasn't. It's like they had to do another (albeit significantly shorter) burn-in again after not being used for awhile. Just wondering if anyone else has had the same experience, because I've never had a pair of headphones do this.
I don't think you're crazy because I went through exactly this with a pair of Monster Turbine, almost exactly the same. Mine cleared up though over about 10 minutes. They'd been sitting in a draw about a month or two. I wonder why? Maybe the drivers settle "something" But I've often thought this on other occasions as well.