can use for hd599. but i’m not sure if it helps sound quality than original pad. For the first few minutes, it sounds like closed headphone, but later, ear pressure increase so i had to change to original pad.
good quallity would not recomend the velour ones if you want almost no quallity loss because the sound gets kinda moushy but letherette is pretty close to original and snap on better i think there is one side that is higher make sure that you put that on the bottom.