I wouldn't really call removing the foam a mod. I mean seriously it takes about 2 seconds.
But no big deal.
I've always used them without foam and the mids seemed a tad better, but we're talking like 1-2% more forward, if that.
I'm going to replace it with speaker fabric I got at Parts Express. That roll will last you an eternity and protects the driver.
I'm not a fan of these at at all, but unlike some who hate specific headphones, I'm able to admit that they're very good if you love it's signature.
Lots of detail, really good sound clarity and a good soundstage. It's signature is like the DT-990 and even Superlux says so on their website.
They're a fun headphone, but I love more forward mids.
When I got them in I burned them in and they sat un-used for weeks. Used them again for an hour a few days ago and they're quite good.
They beat the crap out of the so called $50 "headphones" found at places like Wal-Mart or Best Buy. Yesterday I saw some gold spray-painted "Billionaire" headphones for $40 and I'm thinking...what the?
My local wal-mart got rid of all their decent headphones and now sells junk headphones that are just fashion items.
Now maybe eventually there will be another mod to reduce the bass and bring forward the mids even more. Doesn't hurt to try. These may be worthy of a good EQ setting for me.
BTW they seem driven just fine out of my Ipod Touch, but a tiny mp3 player may be a big mistake. Of course I use an amp with most of my stuff anyway.
EDIT: BTW this is a good idea..i'll try to use my Beyer pads and see if the bass is reduced. With these I don't mind if it has less bass. I seriously could never understand anyone who says these have light bass. Luckily I haven't heard that yet!