Originally Posted by ColmCille
Many say that the Kramer mod--which involves drilling holes in the driver cover--both opens the bass up and tames the highs a bit on the 75s, and are supposed to improve the PPs as well.
It was my understanding that the Kramer mod actually increased
the highs, which seeing as how the KSC75's need less highs, so I can't imagine wanting to do it to them. I use the E3 or E5 with them because in addition to the bass boost there's a slight attenuation of the highs. Without my FiiOs the KSC75 can get ear-piercingly shrill at higher volumes, at least with the Clip, which I don't use the EQ on(because it blows)
iPod Touch 5G 32GB, Touch 4G 32GB, Clip Sport 8GB. Rockbox-> Clip Zip 4GB, iPod Nano 2G 4GB, iPod 5.5G 80GB
2012 Nexus 7 32GB, Asus MeMoPad 8 16+64GB, LG Optimus G Pro, Nokia Lumia 900 and Lumia 520