Stereo EQ Query

[HFTobeason]

I have some high frequency hearing loss in one ear. I'm curious if anyone has any advice as to eq'ing one channel vs the other to try and "equalize" what my ears are hearing through headphones. I'd be playing back off a Mac, using iTunes/Amarra/outboard DAC/headphones. I don't seem to be able to find an obvious way of doing left/right eq, but most likely I'm just missing it. Thanks in advance.