Sadly, I sent these back on their way to Amazon. They paid for the shipping because of the strange problems mine seemed to have, so all is good there. I don't think I'll be getting into the higher end markets of audiophile products ($100+) for quite some time. Probably at least until I'm out of college. The small amount of money I make as a college student could go towards a lot of other life sustaining necessities, like tacos.
Tacos are indeed a necessity. So are Ramen noodles. Make sure you've got a large supply.
I'm sorry to hear the DT880 didn't work out for you, but at least you made the decision early to pack them up and send them off.
Lots of people who genuinely don't like something (or in the very least are overwhelmed with it) come on here and are convinced first to burn it in for hundreds of hours, then try different amps, then different DACs, etc.; and by the time they realize all that stuff can't realistically be expected to fundamentally change how something sounds (except when there's a serious impedance mismatch, or else if something's defective or just performs unusually poorly), the return window is gone.
In my own case, I spent two weeks with the M50 before I decided I couldn't live with it and was forced to eat the restocking fee from GC. I spent three weeks with the Grado SR225i before I came to the same realization and had to pay to ship it back to HeadRoom (great folks, BTW). In that time I tried a bewildering array of suggestions (e.g. taping up bass reflex ports on the M50, bending the headband on the SR225i), and even some fixes of my own invention (filters for the SR225i made of toilet paper to dampen the highs--interestingly, it also tamed the low end, making them smooth and mid-centric, but too colored for my taste).
It was a learning experience. I'm glad I tried all the different models I did before I found a few I could live with, even if it did cost me (both financially and psychologically--I was starting to feel like I would never find something I liked, and as this whole process took months in the end I was really missing my music).
The most important thing I learned, though, is that there are priorities in life. My friends decided to surprise me and come visit me on my birthday right around that time. I spent the better part of the day going back to my M50 (which in my absence was playing pink noise--I believed in burn in at that point, you see), hoping against hope something had changed. It hadn't, and at some point afterward it dawned on me that rather than sticking headphones on and blocking out the world, I should have spent more time with my friends that day.