I got it in today one day earlier.
Tried it first with my favorite Koss Pro DJ100 with M50 pads since it's my favorite headphone. It's 38ohm! This headphone doesn't care about a higher output impedance at all.
Sounds mostly normal with maybe some slight low mid emphasis (or maybe not). The bass is very, very good. Don't know why, but apparently the DJ100 likes this amp. Sounds like it has better bass than the Magni.
When paused there is some noise, but barely audible.
Doesn't seem to be making the DJ100 any warmer. About the same it always is with a good amp.
So far it sounds pretty clear too.
Right now it doesn't sound entirely smooth, but very close. I think maybe it just needs a week of use. On my main amp (and the O2) this headphone sounded really smooth and fairly forgiving to harsh/bright tracks etc.
The microphonics thing is annoying as ***** but i'll live. It takes forever to go away. About 5x worse than I thought.
Did someone say this was a "fun little amp"? Seems like it so far without too much coloration.
I imagine if you want to add warmth to your brighter headphones this probably won't do it. I'll try it with everything else first just to be safe.
Oh yeah and of course with this amp my DJ100 (with M50 pads) only sounds almost like an open headphone at times. It's not hard to do that though and it's mostly from the DAC.
OK now on to the modded Q701, HD-598 and HD-650.
BTW if this amp was too warm or dark it'd make my DJ100 sound like poop and really congested. Luckily it's sounding pretty good. Definitely doesn't fix my harsh/super bright recordings thankfully. Doesn't sound bright to me (yet).
Edited by tdockweiler - 11/29/13 at 12:51pm