And I am still quite amazed at how good it sounds.
I came from a big, hot, heavy, "tied to the mains" desktop tube amp, and full sized Sennheisers.
The enjoyment of this much fidelity while enjoying portablity, has really been an incredible eye (and ear) opener.
I also enjoy Talan7's suggested "Radius HP-NHR-21", anytime I need extreme portability, to plug directly into the Sony A-17 player's headphone jack...is has top notch fidelity, also.
Thank you to the posters' in this thread!