I often find when I turn off the TV, then back on, -- I need to unmute the Amp via the app or adjust the volume on the TV so the CEC signal tweaks the amp's volume. Otherwise I get silence! It's challenging to be forced to interact with the amp just for this reason. I can do optical, but that would remove the volume adjustment via TV, no? The TV is a Vizio e-70 with latest firmware. HDMI ARC and CEC work fine otherwise.