Could more steam tolerated.

Headphone is unfortunately too low. Compared with MDR 10 the sound is dull and quieter.
Unfortunately, the volume can also KH and smartphone together with some music tracks and radio stations not loud enough to adjust. Perhaps there are apps, but I did not test.
The Jabra Revo were there significantly punchier. Also in the overall sound.
Even the 50 Zoro HD from Noontec are there another league.
However, the Bluetooth feature or by an adapter (eg Sony SB20) must here be added as in the Sony MDR 10 RC.