You’ve got a mobile audio player, but your old headphones are bulky, and the sound quality is pretty flat besides. Then suddenly, someone lets you try a Sennheiser. The HD 205, to be exact. This set of headphones is a medium-sized headphone that puts out supraaural audio with the ability to pump out powerful stereo sound, even from low-quality audio signals coming from weak compact disc players. It also has a noise cancelling feature; the closed-back design cuts down on the ambient noise filtering into the ears through the headphone edges. The padded headband and earphones makes wearing the headphones even more comfortable, making it perfect for long music sessions.