I have another amp failure with my RT3000p subs, I had them replaced twice now back in January 2010 and again October 2012, both times they were sent into Polk on both speakers. I get a buzzing / humming sound. I think it's sad that these amps fail this quickly, I know the warranty is only 1 year on repairs but having amps fail this often is very frustrating, I had my caps replaced once in 20yrs owning all Adcom amps, yet every 2 or 3 years I have to have my amp fixed. I thought the last set I bought were brand new. Anyone have this kind of issue. I am still a Polk Fan as I have the SDA SRS1.2TLS, and Polks everywhere in the house, I just feel the quality of the amp is below standards.