I have this cable to live rec from DVDs and from audio recorder. When the sound is a bit feeble optical and digital, I take this cable and I pass by a filteur amp sound, to see a converter RCA to otpique. This increases the volume of live orptique to a premium where a digital cable Profigold which I already talk in this rublique aurio rec. This deoxygenated copper cable wants the shot for rec lives, but it must again autio good stuff, that makes sense to have a relatively sound identical to the real.