Quote:
Originally Posted by Techno Rocker  So went over to the local audio store and tested the only pair of Ultrasones they had. T'was my lucky day for they were 750's, the exact model I would want to buy.
S-Logic:
Well, I'm a believer. I know people have said you need to get use to their sound, but I immediately noticed how every song I listened to just seemed more expansive. This is just my opinion, but I thought it was incredible. When they say you will rediscover your music they weren't lying.
The audio quality seemed very good, the bass didn't have the clarity or impact I was expecting, but all the same they sounded very nice. I guessyou can chalk that up as one of the things that goes away with break in...We'll just have to see.
I'm going to try an order them from NS&L sometime in the next few days.
-T.R.
P.S.- I thought the isolation was quite good. With the volume at or slightly above medium on my iPod, with one of their salesman talking on the phone right next to me, I could barely here him over the music. I suspect these would be quite good to take on an airplane...
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The thing is with demo units you never know what stage of burn in they are in. My first experience with the 750s was with a defective demo that nearly turned me off to the Ultrasones. Luckily, based on so many people raving about Ultrasones I went back to the store and got them to open up a fresh box--and the experience was very different. I also liked the sound immediately, but found them to have a lot of bass (at least compared to Senn 580/600). So I don't know if you are a real basshead or if the demo unit you heard was in the crappy sound land (for 750s) that seems to occur somewhere between 5-120 hours of burn in. I was skeptical (but open) about the whole burn in process. But now I have burned in two 750s and seen them go through similar stages. The last pair was with very little monitoring by me so I don't think it was my ears that were burning in to the Ultrasone sound.
My experience is that right out of the box they sounded pretty good. Then somewhere between 5-10 hours they start going into crappy sound ( they are OK but nothing special and not as good as straight out of the box) which progresses through about 30 hours. One of the first things that seems to get lost is the bass. (So if your demo unit had 10- 120 hours on it this could be why you felt they lacked bass.) Between 30- 120 hours there can be a lot of variation with the HP sounding good one day and bad the next, and them flip-flopping again.
Somewhere around 150 hours they start sounding consistently good again and this seems to gradually improve through 200-250 hours. The biggest part of the burn in occurs by 200 hours. By that point your bass is back, but it different--more clarity and refinement and more integration wiht the overall sound, but less dominant than right out of the box.
Compared to the fully burned in bass, you could say the initial bass was a little boomy.
But there is an additional subtle refinement with longer burn in where the overall sound takes on a more liguid quality somewhere between 250-400 hours. Especially on this last aspect the time of onset varied depending on how vigerously I burned in the HP. (I hit the first pair pretty heavy with pink noise non-stop at somewhat higher than normal listening levels 24/7.) As that first pair went defective at about 320 hrs for who knows what reason, I decided to be more gentle with the 2nd 750 burn in and the total process seemed to take longer to get to the liquid quality. So your method of burn in may change these general times I've given.
What I can tell you is that the general consensus (based on my reading of the nearly 3000 posts of this thread and a few others) is that the 750s are not a bass shy HP.
Good luck--and do your burn in.
