I just picked up my Ref50 from Tweeter in Cherry Hill,NJ. I had it sent back to B&K for a firmware upgrade from version 1.0 to version 1.04 I also have Comcast High Def cable via the SA3100HD box. I had major audio drops and was told this would fix it. I still have the drops. I'm bummed. I know it's the processor because i ran the SA 3100HD directly into my Mitsubishi65413 for the last three weeks with not one dropout. I don't know what to do about it now.. i guess call Jerry at B&K.