I bought my MDR-7506s at least 3 years ago and they've a lot of action, but still work perfectly fine. One day however, I noticed that my stock earpads were basically disintegrating. I ordered the turquoise ones. The color really pops since it matches the logo and they generally feel well-made. I'm writing this review after about 6 hours of testing, and my conclusion is that I wish I'd bought these sooner.Installing can be a little fiddly, but I personally didn't need a tool to push the fabric into the small gap like some others did. What I recommend is sliding one side on and pulling in the opposite direction so it slots into the gap. That should give you enough clearance to continue to pull the rest of the earpad into place.I spend a lot of time wearing my headphones, typically at least 8 hours a day due to work/play, so comfort is something I worry about. Not only do these no longer slip around on my head like they used to (I have a small head), they feel even more comfortable than the stock earpads due to the PU leather material. I also feel as though the noise cancelling is better, but that could be because these fit more firmly on my head than they used to. I'm not an audiophile, so I can't say if these make the headphones sound better, but they certainly don't sound worse. I just hope they hold up over time.
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