Sonically I was not at all of these headphones I had convinced many years the CX 400 and was very happy, but the leaves CX300II thus compare in any way. The centers are completely absent and the basses are overridden. Sennheiser has already built better. Bin transitionally on the supplied Sony headphones switched were with my phone this which are phonetically or n bissl better than CX300II. Too bad!