I received this item and it never worked from the beginning. With all the devices hooked up, my Logitech Z-5500 receiver would not recognize the signal. If i unplugged the devices optical cable at the switches end, the red light was bright. Once i removed the connector at the receiver end, I can see the light was dull. It seemed as if the signal was losing strength once hitting the switch...so much that the receiver couldn't even detect the signal.