Will I notice a great difference between MacBook Pro Early 2011 > Sennheiser HD 598 and MacBook Pro Early 2011 > Audinst HUD-MX1 > Sennheiser HD 598 ? The HD598s don't require that much amp, while they do have a impedance bump in the bass area It would be nice if an amp would noticeably...

Hey, my first post here, and I'm kind of a nooblet in the audio area, so please be kind! I've been lurking a lot here while researching audio stuff the past couple of week; thanks for writing such informative posts! :)   As I'm asking in the topic; would it be worth getting a Fiio E7 for use...