Thanks for the reply! So the DVD player and Nvidia Shield should be set to output bitstream?
Sounds like you're saying if the sources are (incorrectly) set to PCM, that would give me 5.1 audio output, but not DTS/DD?
Yes, I hear sound from center, surround, and (I think) L/R, but the avr doesn't light up showing that it's receiving/processing DTS/DD.