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<blockquote data-quote="maylar" data-source="post: 8079341" data-attributes="member: 541144"><p>People think there's some magical noise cancellation that comes from twisted pairs, but that's not true. All they do is help insure that both wires are in the same noise field. With a balanced line that's important, because we want both wires to have exactly the same noise so the diff amp can reject it.</p><p></p><p>But RCA outputs are ground referenced. One of the wires (negative) is ground, and a ground wire can't pick up radiated electrical noise. It just can't.. it's ground.. zero ohms. Twisted or not. So even if you're feeding them to an amp with differential inputs, the noise will be only on the plus wire and the diff amp can't reject it.</p><p></p><p>Bottom line is that twisted pairs on an RCA is a worthless expense. All you'e getting is a signal line with an extra ground wrapped around it. Not that this is a bad thing... but I wouldn't pay extra for it.</p></blockquote><p></p>
[QUOTE="maylar, post: 8079341, member: 541144"] People think there's some magical noise cancellation that comes from twisted pairs, but that's not true. All they do is help insure that both wires are in the same noise field. With a balanced line that's important, because we want both wires to have exactly the same noise so the diff amp can reject it. But RCA outputs are ground referenced. One of the wires (negative) is ground, and a ground wire can't pick up radiated electrical noise. It just can't.. it's ground.. zero ohms. Twisted or not. So even if you're feeding them to an amp with differential inputs, the noise will be only on the plus wire and the diff amp can't reject it. Bottom line is that twisted pairs on an RCA is a worthless expense. All you'e getting is a signal line with an extra ground wrapped around it. Not that this is a bad thing... but I wouldn't pay extra for it. [/QUOTE]
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