Audio Vision San Francisco. I had a very good experience when I bought the 751BD from them back in 2012 and they were extremely helpful to me in resolving this issue. I have to say that the CXU is, in most ways, an upgrade from the 751BD, though the latter was built like a Sherman tank, the CXU feeling noticeably lighter and less substantial. However, its performance is distinctly better than its predecessor for both video and audio. I was using a W4S reclocker with my 751BD which improved its audio performance substantially, and I find that the CXU also benefits from it.