After the discussion has started on http://www.head-fi.org/t/677809/the-stax-thread-iii/4425#post_11309570 it seemed appropriate to start a separate thread on these reversible mods, in order to have things in one place. Copying here the post, and adding some pictures. For most people I would recommend the modded SR-009: it's easier to mod, with more consistent results, and has better comfort. For dedicated 007 Mk1 lovers, the road will be worth exploring despite the difficulties, and anyway you're already used with it . See the follow-up post here: http://www.head-fi.org/t/677809/the-stax-thread-iii/4440#post_11315101 Arnaud makes a couple of important observations: Finally, images of the modded headphones: Edits: - added a clarification that replacement pads are only needed for the 007 mod. - note that Pad3 also applies to the Fostex TH900 with the exactly same dimensions (though the TH900 can accommodate slightly higher pads too) - 22.2.2015. Pad3 replaced for Pad4 or Pad2 for the 007. This makes the use of carbon foam unnecessary for the Stax mods.