I got them for my Beyerdynamic DT990 Pro's. Of course Putting them on the headphones was sort of a hasle, but that's just how those headphones are. The sound stage definitely changed from just using felt, to leather and suede, It gave a deeper sound and more boomy kick and bass in music. The amount of space from the driver to your ear is great too, giving it time to resonate and improving separation in music. I definitely would recommend these if you are either producing electronic music or listening to it as well, or music that has very present low frequencies,
or if you want a boost in lower frequencies and dip in mid and a boost in high frequencies.

Like another review on here I tried these on Argon Mk1s. Really brought somethings to life. I enjoy the change!

I would recommend these to anybody the standard pads after a few weeks of wear started to make headphones touch my ears rather than just the pad and with these replacements there’s plenty of space to fit anyones ears and as well as making the headphones sound more bass heavy which I like because I listen to hip-hop and edm music if you have $70 give them a shot you won’t regret it

Used these to replace the ZMF pads on my Argons. The original pads were too bass-y and dark, these added the needed brightness and tamed the bloat. Also, very comfortable. Will likely be buying another set.