Convenient, clear sound, weak bass

- The suppression of ambient noise is okay, but for example when AKG K518 LE much better managed. And this is probably also designed more for a noisier environment.

- Very comfortable to wear. Again compared to the AKG K518 LE, which has a very high downforce and a very uncomfortable strap. The AKG K 272 HD you can easily listen to music for several hours - as eyeglass wearers. Also, I have not just little ears.

- The cable is slightly long for mobile use. So even when you're at home on the move. But you can tie it yes. Only occurs to me straight.

- The only thing that really bothers me a little bit of lack of bass. The sound is indeed cleaner and clearer than the AKG K518 LE - this also applies to the bass - but at the bottom of really very weak. I have on several test pages also found the frequency response of the AKG K 272 HD, which confirms just that. So it depends on what kind of music you want to hear. For a few classic pieces of these headphones is really my preferred choice for jazz pieces with bass rather not. And film music like "Pirates of the Caribbean" or "Star Wars" is very bad off. No spine-tingling effect =)

- Powered by the iPod, sometimes quietly. By Fiio E7 Headphone Amplifier no longer a problem, due to the lack basses but this may also change anything.