As I've mentioned many times before, for reasons like this http://www.stevehoffman.tv/forums/showpost.php?p=1789695&postcount=141 you need to combine the channels to play mono records on a stereo table. If you don't have a dedicated mono cart or a separate 'table or if you have a phono stage without a mono button you must do this simple hookup to get the best from your mono records with the least noise: You need to go to Radio Shack or someplace like that and get a DOUBLE Y CORD setup and plug it in between your phono stage and your line stage (or your turntable and phono stage). A double Y: The first part of the Y cord combines the left and right signal to cancel out all of the stereo noise. The second part of the Y cord brings that cancelled signal to BOTH stereo channels so the good sound will play out of both of your speakers. There are more upscale versions of this type of setup out there and this has been covered here. This is essential for good mono listening. Don't forget to give it a try. It's how I do it in a few systems.