Originally Posted by techboyjv
Also guys what amp do you guys recommend? I was looking for some portable ones, like the CMOYBB, or the PA2v2, also does amping make a difference with the m100's? I was also considering in the future of purchasing some HD650's so an amp that could power a headphone power hungry as that, and which would provide more of a bass boost if needed?
Short answer: amping does help for instrument definition and overall clarity, and coloured amps with good "synergy" with the M-100 can help bring out the treble and midrange for rock-like music genres
Long answer: amping does help somewhat. The purpose of an amp, traditionally, is to provide more power to the headphone if something can't power it properly. Of course having an amp also introduces different amounts of distortion and whatnot, which is why not all amps sound the same. I own a couple of really clean-sounding amps (JDS Labs Objective 2 and C5), and one good but not as clean budget one (FiiO E7). I've found that between the three, the Objective 2 made the M-100's shine the most. Sound signature-wise the M-100's hardly change at all (as they shouldn't for a transparent amp like the O2), but in terms of instrument separation and definition, things are much better than through any other amp (internal or external), I've tried. So for slightly altering the presentation of the headphones, yes I think the M-100 can benefit from an amp. It will probably sound better with amps of better "synergy", or amps being coloured so the M-100's flaws are "fixed" with the amp's sound signature, but I'm not a fan of those kind of purchases (I think of it as buying a super-expensive sound equalizer).
For the HD650, FiiO E12, JDS Labs C5, and Objective 2 are all [semi] portable amps that I've read work well with them. From personal experience, the O2 sounds great with the M-100, and the C5 is a great pocket-friendly amp. Though probably not enough to drive a HD650, a FiiO E7 also sounds pretty good for the price nowadays.
Edited by miceblue - 3/26/13 at 5:55pm