Need some break-in time

By Aric S.

As with most higher end speakers/headphones, these need some break-in time. My initial impression was that I may have made a mistake buying these. I stopped listening to them and ran them with white noise for about 100 hours. (4 Days straight). Wow what a difference! They now sound like what I was expecting. The bass goes down further than any headphones I have ever heard. Not boomy or over stated. Articulate and detailed. The mids are superb! I've heard vocals, in recordings that I am very... familiar with, that I have never hears before. The top end is tight and detailed. Some reviews have remarked that there is not enough high frequencies. I dis agree. I find a lot of headphones too hot on top. I can listen a little but find them fatiguing. I find myself grinding my teeth when listening to them. I have had many 4-6 hour listening sessions with the HD650s and seem to never want to take them off. No fatigue just pleasure. They are amusingly comfortable. After a while I don't even notice that they are on my head. I have a broad range of listening and the only type of music I would not recommend for these headphones is Hip Hop. They don't seem to deal with ridiculously exaggerated bass. Lucky for me I don't listen to this type of music. Everything else sounds superb! I love them. Nothing but smiles! I would recommend a good headphone amp. These things like some juice. I'm using a NAD C-340 and it gets the job done. None of my portables can make them sound good. I got a dragonfly 1.2 for my laptop and it sounds great but I'd still like a little more usable volume. HIGHLY Recommended!!!