Here is what is the situation with me: On the left earphone the logo is completely gone and now the chrome already started to fall, but the right earphone still look brand new.Seller on eBay who said "The left earphone is defective or that they forget to put a last protective coating over their logo on the headphones" is right, only that he had forgotten to say that they are 100% fake :-) When I put them in my ears for first time I noticed was a sound signature of all overpowering bass with no definition in the mids or clarity in the highs.I was very disappointed.I wanted to have headphones, not subwoofer for head :-) but now, after 1 month and 100 hours burn-in they sound good (not amazing like genuine S4s but good).Only have sibilance on some vocals, but I listen Electro House and there are not many vocals.I am confident that the earphones I have are fake but it's not cheap copy, if this can be comforting for someone.