![Sony_MDR-Z7_r__ponse_en_fq.jpg](http://img1.lesnumeriques.com/test/94/9484/Sony_MDR-Z7_r__ponse_en_fq.jpg)
If this FR graph is accurate, I'm really disappointed in the +6dB shelf from 40-200Hz and the -6dB roll-off from 40-20Hz.
The Z7 has a 70mm driver!!! This thing should be dead flat to at least 20Hz.
I'll wait for Tyll's measurements before I jump to any conclusions, but so far, it's not looking too good .....
![frown.gif](http://files.head-fi.org/images/smilies/frown.gif)