I got home from work at 4:40pm, and my HD600s were not here!
About 45 minutes later, however...
You know. Because ya obviously don't have enough photos of these babies.
I began by listening to them through my phone: Galaxy S4>UAPP>DragonFly1.2>SennHD600. All FLAC files.
The gain needed to be maxed out for some songs, and others, almost maxed. It sounded very, very good. Not small or weak. The bass was underwhelming, even on one or two bass-heavy pop tracks I played. The clarity is impressive, as is the warmth.
Then I brought them to my desktop. I had forgotten, I do have a headphone amp in my Logitech Z-2300 2.1 system. I had chosen to forget this, because I doubt it's a very good-sounding amp. But it's got power. I didn't even need to crank her up to 12 o'clock and the Senns were too loud for me.
The DragonFly connected the Z-2300s to the PC now, and these headphones sounded even better. They opened up further. There was more bass, but not a maddening level, and a general sense of largeness.
My thoughts are: If you have to, the DragonFly alone is good enough for some fine-ass listening. But these phones will thank you for a good deal more juice.
-~::
Pinky::~-
~Edit~
Actually, the first think I noticed when I put them on and tried to listen to something, was how ******* easy these cable ends come out of the phones. They are frightfully loose.
~Edit2~
The Beatles Abby Road album just brought tears to my eyes, it sounded so good! I shall be burning-in my HD600s on a pure Beatles loop. Whilst I am away at work, they'll remain here soaking in the proper spirits.