These studio headphones have that flat sound response you would expect from your monitoring system, so you can fully trust your ears after, of course, the given time to really know them. I switch between the headphones and my monitor speakers all the time when mixing and I can say that I'm very happy. I also use them when I'm composing and don't feel like to use the speakers, for a more quiet session. They are a valuable companion for every situation. In terms of comfort maybe I feel them a little bit too tight around the ears but I also know that I have yet to find a pair that doesn't physically tire my head and ears after a while so maybe I'm a bit to delicate.
The 7510 have very similar problem to the older 7506 model - way too much treble, with high peaks so, that for me it was painful to listen for more than a few minutes. Build quality is not bad, but not good either. Overall construction I would describe as very flimsy looking. There are a lot of headphones on the market, for the same price which built like a tank (look at Sennheiser 280 at least). 7510 on the contrary, remind the rather my cheap (if not even fake) headphones I had as a kid. I am at loss to say how Sony call this a professional headphones.
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