I think you are unlikely to find commercial amps with this feature. I would suggest you approach some of the well regarded DIY builders like voodoochili who post on head-fi.org. They might well be able to build something like this for you, and there are some very highly regarded DIY designs.
Headphone Amps with left/right volume control???
I'm have reduced hearing in one ear. I'm look for a headphone amp that has left/right level controls. I'd like it to be portable too, for using with an IPOd. Any suggestions?
I cant be the only audiophile with poor hearing in one ear???
I cant be the only audiophile with poor hearing in one ear???