I bought this a few weeks ago from a fellow forum member and didn't end up needing it. Sells for $67 at Onecall. From Niles: Niles PS1 Black (FG00012) CD, Auxiliary or Phono A-B Switch Enables you to connect two audio sources to a single input, also can be used to switch between any two line-level sources A and B are fully isolated Switches hots and grounds Gold-plated RCA connectors Dimensions: 4-3/4" wide x 2" high x 4-5/16" deep I'm asking $35/obo. Let me know if you're interested. Here is my Ebay Feedback for buying/selling references.