I was going through my "Threads" and came upon yours. I have since purchased a Kora Hermes II DAC. Since then I'm running "Analog Direct Matrix." The sound is so much clearer and the volume is several db higher. This way, you can still use the sub output on the Theta. I only use it for 2-channel and turn the rear speaker off. My CD player has a variable output and sometimes for "fill", I use it into an alternate amp to control my rear speakers. If you get a chance to run an outboard DAC, try this-you'll be impressed. Or if your CD player has an analog out, use the analog direct anyway.