Gotta say, I love the Sound.fi 5 Pros. I'm actually in mourning at the moment, waiting for a replacement cable for them, because one side crapped out. From what it looks like though, the replacement (spares as seen on UE's site) cables are thicker and terminated differently from what I have, which is comforting. Sound wise, I've discovered over the past few weeks that they're one of the most neutral pair of cans/phones I've had the pleasure of using. (Didn't say ever, just out of what I've listened to so far)
The bass is wonderful. Ever present and detailed, without losing any punch or warmth. There's no hint of mud or mush, even when turning it up several notches EQ wise. I believe that it's entirely up the the source in order to get the most out of these babies, and I believe they're capable of quite a lot. The treble is never overbearing, and I've not ever had a problem with sibilance. Lately, I've been keeping my IHP's EQ set to flat, and my ears have adjusted, compared to when I first got them, I thought the treble was too light, and set it about 4dB higher. Now, it's perfect.
If the recording is produced well, it shows. Unfortunately, they're not magical, so if the production is crap...that shows too. Phones like these encourage one to encode their files with the best possible quality, and from CD's with outstanding production value. It's truly inspiring.
I wasn't sure if I thought they were worth the MSRP, but to be honest, I'm missing them so much, that thinking about paying that much seems very reasonable. One day, I'll spring for the UE 10's, but until then, I'm really overjoyed to be able to have these quality phones, from such a great company.
Ah...Almost forgot:
Pictures Here
Please click on "Latest Pictures" to view the whole gallery, and all pics can be enlarged. I had more pics, but my cpu died, and they're in the other PC. Haven't had a chance to install new Mobo/CPU yet.