Hey guys what do yall suggest i get. My Sennheiser  HD598 tends to sound distorted once i start cranking it up on my Ipod (like an old car's speaker buzzing with bass level all the way up), so does this mean that it does not make any sense getting an amp since it cant handle high SPL? Or would...

  I just received my HD598 last week, and I have to say, I am very disappointed of it sound-wise (maybe my expectations were a little bit too high). Heres a quick review of it:   (50+ Hrs burn in)   The HD598 produces sounds with high clarity, however it's lacking the low end (BIG...