My macbook pro has the static, hiss, blips and bleeps on the headphone out that many owners have reported. It makes virtually any audio tasks (from casual listening to playing around with rough mixes away from the studio) impossible through the analog out. I think all or most of the current MBPs suffer from this problem. I've heard that the problem is less noticeable with higher impedance headphones, however i have a pair of grado heapdhones (32ohms) that i'd like to continue to use. Is there any sort of adapter i can use between my headphones and my computer to eliminate or reduce the noise? Ideally i don't want to resort to a usb sound card like the imic - i already have much better audio interfaces, and i am simply looking for the smallest, most invisible solution possible for when my macbook pro is out of the studio.