Had on several occasions in-ear headphones from Sennheiser and was basically always satisfied. The CX 300-II has a very rich full sound with plenty of bass, clear highs and Presenten centers. Both with my android phone as well as with the iPod, the sound is absolutely satisfactory. A small smear there in the cables. These are rubber-coated and unfortunately tend to clutter it. Since there are now - also from Sennheiser - innovative coatings that make a Vertüddeln almost impossible.
