Wick, along with Tom, I'm puzzled. I assume that you're referring to the 8300HD. I don't do Zone 2, but I took a look at mine to see what I'd do. You're apparently saying that you connected coaxial cables to the left/right analog outputs on the 8300 but it didn't work? The 603 input is fine because it works with the CD player. Did you check to see if the analog audio outputs on the 8300 are possibly defective(use them into the 603 to try to play regular left/right stereo on your main system).

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Enjoy the music, not the equipment.