Take the inputs out of the amp and turn the amp on. If you have no hum, the hum is coming from elsewhere. If you have many grounded units, you will typically get a ground loop or hum. This is caused by two or more routes to ground with differing potential. Unground the preamp and reconnect it to the amp with no cheater plug on its power cord. If you have no hum, go with it. Otherwise, unground other source units. Although many go with only the preamp grounded, you probably would feel more comfortable with only the amp grounded.
Is cheater plug safe with grounded monster power?
I recently plugged in a new amplifier into my monster power HTS-2600 and experienced a loud speaker hum. Applying a cheater plug to the amp outlet on the HTS-2600 completely eliminated the hum. My question--and excuse my ignorance--is whether it is safe to use a cheater plug to the amp outlet of a power station that is itself properly grounded? Although the temptation to continue using the cheater plug is high because of improvement in sonics, I am not comfortable because I think the amplifier without a ground to the power station would not be protected even if the power station is grounded. Am I correct in my logic? I thought a cheater plug was only safe when used with old 2-pronged outlets to allow use of 3-pronged plugs and attaching the cheater plug wire to the screw of the grounded outlet?
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- 47 posts total
- 47 posts total