Please read the post retraction below first (original content left as permanent proof of my idiocy)
Funny, Dex. LOL!
Well, I arrived home and couldn't resist plugging them into my system immediately (c'mon, you knew that already didn't you, you sly dogs?). All I can say is:
"Veeerrrrryyyyy peculiar!" I really, really hope that burn-in makes these do a complete "180", and turns this (currently) sows ear into a purse. Because the sound right now is truly bizarre. Remember when you were a kid, and you tied two aluminium cans together with a string, and tried talking to your best friend through it?
That would sound better at this point. I kid you not. All frequencies are muffled, and the midrange (female vocals, in particular) are recessed so very far into the background that they seem to be eminating from a long tunnel. No speaker I've ever heard sounded remotely like this.
My amp that can easily drive Sennheiser HD580's (300ohm), Beyerdyamic DT880's (250ohm), and Grado RS-1's (32ohm) to ear-bleeding levels well below the 12 o'clock mark, is now forced past the middle of its volume knob before creating anything reasonably loud with the 750's at this point. Burn-in had better fix this too. No 40ohm can should be this tough to push.
But, I'm in this for the long haul. I had to take a quick peak, and I will now put them on the "cooker" for a few days and come back. I'll reserve final judgement for much later.
I will say that no matter how good they may end up sounding down the road, even if they end up sounding like R10's, I can't imagine how Ultrasone expects to sell more cans if they sound like this out of the box. It is not about my brain. It's definitely something very strange with these new drivers & configuration. OK, titanium needs to break in - fine. But still!
'Nuff said for now. See you in 100 hours or so...
**** MAJOR RETRACTION: The aforementioned truly bad sound was attributed to my not connecting the removable cable sufficiently. Once it was screwed on completely, frequency response improved considerably. Apologies for being too quick on the draw!
We now resume with your normally scheduled burn-in...