1 set of wires made a buzzing noise when connected to my subwoofer. This is independent of whether they are connected to an amplifier. Make sure you spread the forks and make sure I didn't create an imbalance. Swapped with another set and encountered no grounding problem. I only need one pair but it's still disappointing. I recently bought a bargain set of 25ft cables that worked better than this one (yes I know those are low prices but I'm talking $5 for 25ft lol).
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