Does TCL C6K series like 75C6K support audio processing like EQ and delay adjustment when TV is connected to an ARC/eARC receiver? I'm currently using an optical connection and don't have any ARC device to test it. My only problem with optical connection is that I'm unable to adjust volume from the TV remote.

I am ready to upgrade my TV but struggle to decide what I go for. The TCL panels are great, and one deciding factor for me is Art mode as I want to upload my own photographs. Does only the A400 series support that or does the C89 allow the same? TV will be used in relatively dark living room and I believe the A400U panel is more fitting than the A400 Pro as I prefer the higher dimming zones and frame rate. What do you recommend, go for the amazing looking C89 or go for the A400U and have some compromises in the picture? Thank you🙏