If the TV doesn't have analog audio outputs, you will need to run the optical through a DAC. Otherwise you would need to run analog audio from your video sources directly to the 150, bypassing the TV.
Hook up Plasma TV to Audio system
I just bought a Panasonic Plasma smart TV and need to connect to my audio system. The TV has an Optical out and my Pre amp which is a TAD 150 only has RCA connects. WHat low cost connection would benefit my system. I am running through TAD Hibachi monos and Vandy 3aSigs.