TL;DR version (because I know how repetitive these threads are)
Headphone: Denon D2000
Source: Laptop / iPod (via LOD)
Desired sound signature (yes, I know amps are supposed to be neutral but...): Slightly softened treble, elevated mids (hopefully to compensate for the D2000's recessed mids), slightly increased bass impact (without losing the quality), and as wide of a soundstage as possible.
*must be pocketable (similar size to iBasso D2+), battery life is not yet a concern
Relevant headphone specs: 25 ohm, 106 dB/mW
Edited by solidsnake - 7/16/10 at 11:06pm