Unfortunately, after a few days, my DT880s have been returned to Amazon. While I can confirm my positive impressions, when the headphones were delivered I immediately noticed something weird, and I will now elaborate on this.
This was the second time I ordered a pair of Beyerdynamic cans from Amazon, the first being when I got the DT 700 Pro X. When these arrived, I noticed that the box was a bit scratched; the headphones looked immaculate, but there was a little bit of dust inside the box and also on the cans. Of course this made me a bit suspicious and skeptical, but since everything else was just fine I started using my new Pro X's and forgot about it. A few months later, I ordered the DT 900 Pro X directly from Beyerdynamic, and everything was just flawless - no scratches, and not even the tiniest bit of dust.
Now to the DT 880. Of course I bought my pair as "brand new", but this time the box had several scratches on it, plus three different stickers (one on top of the others) - one seemingly applied by the manufacturer, the others by Amazon. These alone would be serious "red flags" in my book, but since I don't enjoy the hassle of returning purchases, I took the 880's out of their box and put them to work. The red flags turned to be real when I realized that there was a scratch near the headband and that the right earcup was a bit loose as I could not manage to fix it on the desired position. These things combined make me think that I received a pre-owned item, even though it was listed as new. The great sound + competitive price was eventually not enough to let these red flags pass unnoticed, so I returned the flawed pair and a new one - this time from Beyerdynamic's official store - is on its way. Let's see how it goes this time - of course one cannot make statistics out of two cases, but if it will be a replica of what I experienced with the DT 700/900 Pro X's...
Just to be clear, I am not pointing my finger against anybody/anything, and I asked myself twice whether to write about this or not, but this is just what happened and honestly I think it is not acceptable, so - considering also that I'm not the first on the web to complain about this kind of issues - I decided it was something to share.