When I want to listen to TV shows through my 2-channel system, I used to use RCA analog interconnects between my cable box and pre-amp without any lip-sync issues. But I wasn't crazy about the AQ. So I changed it to a coax cable (10') from the cable box to the coax input of my 105, then short balanced cables to the pre-amp. Now there is very noticeable lip-sync. I have no issues when using the 105 for BluRay discs or the ChromeCast in the back HDMI. It must be going fromt he cable box to the 105 to the pre-amp, delaying the audio. Any solutions? Would an optical cable be faster than the coax? Or just go back to analog cables from the box directly to the pre-amp?