Hey everyone, just looking for some expert advice. The 2 best headphones I own currently are the Beyer Amiron Home and Hifiman HE4XX. The thing is idk if I'm especially treble/high-mid sensitive but I can't seem to get away from an oppressive weariness from the upper part of the sound range...

Guys can someone please post a link to whatever I would need to do, buy, etc regarding the 23 ohm resister mod? When I search I seem to only come up with radio shack-looking wire resisters that I can't believe are what is actually being discussed. I'm picturing more of a short inline cable...