I contacted Polk Support with a problem about my Micropro 1000 responding to My Musical Fidelity A1 volume control, they said it was possible the two remotes shared code sets. However, tonight I had the same problem when I was changing tracks on my Marantz SA-8001 and the Micropro responded and changed volume. I quickly grabbed another remote to my Denon 3901 and hit play, and the sub changed volume again. It's like it intermittently will go into a mode for a few seconds where it will respond to ANY IR code. Anyone ever see this issue before?