an amp? for what? A wireless headphone bypasses your amp and DAC so if you already have high-end equipment going wireless will make them all irrelivant. I see wireless getting more popular but not much more. Personally I hate dealing with charging batteries, and dieing batteries, and no matter how good the battery it will start loosing capacity after a 100 cycles or so. I job with a bluetooth headphone and it sounds ok at best but it is always somehow making my iphone skip around on tracks for some reason. I hear this beep which means the phones have changed my song again (which is great when listening to a 17 hour audio book).