I've been subscribed to this thread since it's beginning because it was right at that time I decided to start looking into high-fi headphones.
After reading the hype and seeing the various and incredibly simple ways to tweak the sound from the headphones I decided to forgo investing $200+ in a nice set of cans and "just" buy some s400s.
I'm so glad I did. Thanks to everyone that's been actively posting on this thread and being clear on the simple tape and stuffing strategies. I also got a few pads from cute and it's crazy to learn how much different pads will change the sound. I'm anxiously waiting for my hm5 pads to see what happens next with the sound.
I'm an Electronic Technician and I'm VERY excited to experiment with recabling these as well. I'm starting to scour the resources spread out on the site to get my research done. And the best part is that if I screw up it's only $25 to replace these suckers.
Next investment will be a z02 amp to see how much bass I can get out of these. An "upgrade" to the s500 might be necessary for more bass, but I know these cans will always have a place in my heart as the start of my high fidelity journey.
Again, thanks to everyone.