a_rec, I wonder why can't you do a neat job with that... To me, the high frequencies seem to have gotten tamed down a bit, but it still extends nicely. It might also be placebo because of reading through the Anax mods and discovering similar designs even in my Denon and a lot of other cans. It makes much more sense to me in terms of modding, because I really think they have first designed the SA5000, and then scaled the fine product down to the SA3000 and then the SA1000. I have to admit I am doing these mods to keep my SA3k away from possible design flaws.
I have also dampened the inner chamber, but I don't have the time to open the cups up again today. After stuffing it with the sound deadener, they are very difficult to open. Overall impact on high frequencies are similar to the above, but the real treat lies in the bass response. Either the stuffing the chamber or applying a ring of deadener onto the driver, or both, together have given them a very very tight bass response. It is no more a loose, weightless bass. It is tight and quick, like a rubber band being loose and then now stretched. Lightning fast together with the other frequencies, awesome bass.
For the pads, I just kept them stock. I need to find more time for it, but the time I've got new pads on, I've already forgotten how the old pads sound like. I do have Denon pads and I have tried them, but I cannot tell a lot of differences straight away. Might report back next time when I have a whole day mastering my pad changing (oh eww).
Rather, I have 'phatpad'd them with some hollow tubing. The increased volume of air inside the cup gave me a wider soundstage and maybe more bass presence. I am not sure is that due to the increased volume of air, or the distance between my ears and the driver actually.