I just snagged a pair of these, and so far I love them. Question: I've read time and time again that the DAC/Amp in the latest Apple laptops is pretty good (and at 55 Ohms, the Clear Mgs shouldn't be too much of a challenge). Does the Apple dongle improve on the laptop that much? My primary...

I've been lurking here for quite a while and I've learned a lot.  Still though, there's a lot that I have yet to learn so I figured that I'd take the plunge by registering and asking away... I bought (and recieved today) my first pair of good over-the-ear head phones-- the Sennheiser HD 598...