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What is the relationship between volume and potentiometer_ Why do some stereos turn a little louder? What is the relationship between volume and potentiometer? What is the difference between A10K potentiometer and B100K potentiometer? High signal impedance means high signal voltage and low signal current. Here we should use a potentiometer with a large K number. If we use a potentiometer with a small K number, the signal voltage will be pulled down a lot, which will cause distortion. Low signal impedance means low signal voltage and high signal current. Here we should use a potentiometer with a small K number. If we use a potentiometer with a large K number, low signal voltage will cause distortion through a large K number resistance. Potentiometers use large K numbers in places with weak signals and small K numbers in places with strong signals. After changing the potentiometer, the sound will be the same as that of the potentiometer