I have a Non Functioning Harman Kardon Amp out of an '04 Cooper S that ran into the same problem many others have. The speakers began popping and sound was not being produced. There are numerous sites that explain how to repair these amps, I simply don't have the time or patience to do it. I just want this thing out of my garage. $50+shipping and it's yours. These amps run $600 used or restored and $1000 new. PM if you're interested. - Joe