Call the phone number at the bottom of this page: (http://www.hafler.com/techsupport/index.asp?ID=5) Rockford build the amp, and they've still got some of the correct MOSFET pairs to repair it properly(They DID anyway). Mine lost a channel and they replaced the ouputs a couple years ago. Did the same exact thing a month later, and then they found out the main board was bad. They charge a flat repair rate, and you get a warranty to back up the repair. Thus my second repair was gratis. It would have been nice if they had found the problem the first time, but- they were convinced the problem was a shorted speaker. I use my 9505 to drive my transmission line woofers, and the amp had sucked the coil to the bottom of the magnetic gap and held it there for however long it took me to jump up and turn the amp off(both times). They did an excellent job the second time, no issues now. Just fast, articulate bass.
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