napoleonblownafet
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An RCA cable with the screen connected at one end can actually reduce EMI interference and you'll notice this with a phono/turntable source. The idea of these cables is there are two cores and the screen is connected to one of them at one end. Because of this, the screen carries no signal EMF from the source and is simply working as a screen, not part of the signal carrying circuit. This has a number of benefits, particularly where small signals from turntables are highly vulnerable to EMI and such. You can actually buy these cables relatively inexpensivly and experiment. https://www.amazon.co.uk/RCA-Cable-...s=directional+rca+cable&qid=1638369254&sr=8-4