I give you my opinion on the DT880 I have a few days, so hot printing listening is output directly to a Philips CD608 CD player and Yamaha CDX 550: headphones Sennheiser HD 540 replaces a reference (model fitted to the Navy in communication radio station in the years 1995) the cells were replaced for sure, the price range of years and certainly did the same but the comparison reflects the two types of listening, music test pop, pop-rock, classical and vocal, the DT880 very comfortable at the port, with a mono jack golden thread seems adaptable and sturdy, accurate listening throughout the record, seems a bit "stale" by the media compared to the sennheiser, for against the instrumental details are impressive and out of proportion, but the tone of voice is as "flattering", as put forward under the idea of ​​a comparison with the Sennheiser HD650 in competition during my purchase persists, I would share if it is done.