Hello, I've read a few threads that alluded to a comparison of these two products, but no post explicitly stated which of the two is a superior product.  I previously owned a pair or s4's, and was satisfied with my purchase, no doubt, but the mids and lows of the s4 seem a bit synthetic, and...

Hi, my monster turbine pros sounded fine until the left headphone recently stopped working altogether.  This is the second time that this has occurred.  I no longer have warranty so I need to find a way to correct the problem.  Any solutions?