Thanks, I think I am going to look into the FiiO E11 due to its form factor and SQ...that is if I really need an amp.
If I am using the Cowon Z2 and my Phillips Citiscape Uptowns (which I mentioned are a little underpowered) and my VSonic GRO07 MK2s, do you think an amp would be necessary? I know the Cowon (which I have not purchased yet) has a good chip and decent power...I am expecting more than my iPad (current music source). I don't want to have to lug around a brick attached to my PMP everywhere I go unless it will noticeably increase the SQ and, only if necessary, volume.
Not sure what you mean by that in this context.
The headphones play as the system is currently.
If you want more power and better SQ from that system,
an amp is the answer. (Assuming you're listening to
lossless files, not 192 or 256 which will never sound
very good on a revealing playback system).
The E11 does not qualify as a 'brick'.
You put a band around your PMP and the E11 (there are all sorts of thick rubber bands
offered today just for this purpose) and you won't notice it's there until you listen.
The music becomes more detailed more dynamic, and ultimately louder if you wish.
If you're a music lover, and it seems that you are, the small investment in an E11
for your system is absolutely worthwhile.