We’ll, I’m a listener, not a measurer, and it’s been a long time since I’ve heard them with the original stock pads and my pads were at dome unknown level of wear when I changed them and I’ve never heard them with the current version of the stock pads, so take my personal opinion as just that but, with all that said, yes, I thought the Dekoni hybrids were an across the board improvement on the 580s, smoothing things out and warming them up just a bit, while imparting just a bit more liveliness into the proceedings. My 580s Aldi have the rear foam removed and metal grilles from the 600s, so even more variables, and I doubt my ears snd head are identical to yours, so more variables still. Certainly, they look and feel richer than the originals, and imho, are just as comfortable. Plus, you get 15 or 30 days to decide if YOU like them in YOUR setup, which, truly, is the only way you’re ever going to know for certain.