Over the last three months, there've been lots of posts asking if the Alpha Pads work for HE400 and HE500. Thanks to Fred at Audio Prana, I have a HE500 on my head with Alpha Pads. I was able to do it all in about 10 minutes having never taken a pad off an HE before. They went on without any modification, though it was mildly tricky to attach to the phone. I'm enjoying the sound and comfort but my wife is not enjoying sharing the music unless Mozart is on. Use case #1 for closed phones.
I did crack one of the pad mounting rings, ironically while removing it from the original stock pad. Fortunately only one edge cracked a bit so it was still usable, and it was easy to get into the Alpha Pad.
I like the result, and will share graphs (along with the much requested 3.0 to 3.1 to 3.2 changes) this weekend.
I'll also make a video of how the pads went on the ring and how the ring is replaced on the phone sometime this coming week.
For me so far, the Alpha Pads on my HE-400 have been great for both sound and comfort. Others may disagree of course, but it's good to see that they pair well with the HE-500 from your experience. As far as technicalities go in how the pads alter the sound (if it's even discernible), I can't wait to see your graphs (and of course for the Mad Dogs) - still looking forward to the day I can pull the trigger
Edited by modulor - 5/18/13 at 8:08pm