It looks like the AKG K167 measurements have been released here at innerfidelity.com
I'm impressed by its fairly flat response, as well as 30Hz square wave that very closely resembles AKG K550.
However, it seems that seal is much easily achieved with the AKG K167.
There haven't been much talk about these headphones since the first official post has been locked,
but I would like to see some more discussion on them.
Here are the 30Hz and 300Hz graph of both AKG K167 and AKG K550.
AKG K167 30 Hz Square Wave
AKG K550 30 Hz Square Wave
AKG K167 300Hz Square Wave
AKG K550 300Hz Square Wave
Edited by korewest - 2/6/13 at 2:20pm