What is the purpose of RCA inputs and outputs on a car stereo, and what is the difference between the various types? - Quora
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Why does Premium HIFI equipment still uses 100 years old RCA connectors? Why not to get rid of it? : r/audiophile
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HIFI Lossless 1 Input 4 Output RCA HUB Audio Distributor Signal Selector Switch Source Switcher Tone Volume For Amplifier Board - AliExpress
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