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Help me make sense of this

and it's ground loop/cheater plug related.

I have tubed monobloc amps hooked up to a Running Spring Audio Maxim power conditioner. Only the monos are hooked up to the RSA unit.

I have a huge power cord that goes from the RSA to the outlet. I use A+ power cords from the RSA to the amps.

When I attached the cheater plug to the end of the power cable going from the RSA to the outlet, I get hum through the amp. If I connect the amp directly to the wall bypassing the RSA, I get lots of hum. If I attach the cheater plug to the end of the power cord for the amp and plug directly into the wall I still get hum (but not as much as without the cheater plug). If I directly connect the RSA to the wall and use a cheater plug at the end of the power cords that connect the amp to the RSA unit, silence. Zero hum.

For the life of me I can't figure out why this is. Any ideas?

Thank you, and stay safe, and Happy Holidays!


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Topic - Help me make sense of this - AudioDwebe 09:33:15 12/24/20 (9)

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