I modified these SR60i for fun to see how close I could get to my RS1i. I have to say that I'm very impressed by the end result and it took me quite a bit of A/B'ing to notice the differences between the two. I could easily live with these SR60i, but I just don't use them enough to keep them because I prefer my RS1i which is just that little bit more refined and smoother. Mods I've done: -Obviously the stock plastic air chambers have been replaced by wooden ones. The type of wood is Padauk. -I've vented the drivers (5 holes per driver) -Applied a little blob of blu-tack on the back of the driver magnets for added bass impact and smoothness in the treble. (Grado does this also from the RS2 and up) -Removed the white cloth covering the drivers for more clarity. -Applied some felt onderneath the headband for more comfort. I find it stays more stable on my head with it because the vinyl headband tends to slide around on my head. Asking €175 shipped anywhere. Paypal please add 3% or mark as "gift"