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Relocating various ground connections Whines and pops: If you have a combination of noises, or if one or more of the problems listed above persists despite efforts to stop the problem, the noise may be caused by one or more of the following problems: . Excessively high input level setting on the amplifier . Poor or open shielding, extra long cables or corroded input cables . Bad connections . Bad (or high resistance) system ground . Reversed polarity on audio signal cables . Poor quality source