I have bought myself the AKG K 271 MK II, on the recommendation of their own studio recordings. He is very neutral in tone, gloss over anything, but helps uncover precise weaknesses (and improve of course). For my purposes, the perfect headphones. Shortly before the warranty period was only a page out, a few weeks after that then both sides. Only then I turned to AKG. For most companies, you would have so unlucky or a lengthy discussion, it would have joined if it so yet would be a guarantee case or not. Unlike at AKG: You are quite accommodating immediately agreed a free repair - and carried out. Such customer service is exemplary.