Audio Cables Free PLR Article Here are types of audio cables for your home theater system. And comments about the pros and cons of each are discusses for our review. Coax Digital Audio (S/PDIF) This offers digital connection with copper with a lot of systems at this time, except for use with Set Top Boxes, audio and video with camcorder use, HDTVs and Digital VCRs. Toslink This offers digital connection without electrical interference, great for digital audio signals with ...