$250
I'm the third owner. The first owner modded his SR225, then sold it to another guy who modded it further. I then got these and added my own touches. The screens have been removed in front to clear up the high end; the ten holes in the back have been popped to give these remarkable bass. I've damped the interiors (the inner chamber walls and the magnet plate). They sound very, very nice! I'm selling because I have the PS1000, leaving me free to sell these off.
Here's more information about the original mod by Charliex:
(page 37, Post #551) http://www.head-fi.org/forum/thread/119314/post-your-grado-mods/540
(page 46, Posts #681) http://www.head-fi.org/forum/thread/119314/post-your-grado-mods/675
Here's more info about mlantin's mod after that:
(page 72, Post #1069) http://www.head-fi.org/forum/thread/119314/post-your-grado-mods/1065
Edited by Bilavideo - 6/18/10 at 3:17pm
