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?
number1cuban
Just curious? Why don't the RCA interconnects (cables) ground one piece of equipment to the next piece of equipment, and so on...If you have a power cord, say the amp, utilizing three prongs, into a proper electrical circuit, why won't the other components ground all togethere?
Regards,
They are; this is why you get ground loops. Sometimes, however, the chassis is not grounded to neutral or to anything.
Quincy, the interconnects do provide a ground path from one component to another. This ground path is a low-voltage, low-current signal ground though - it is not designed for nor intended to be a safety ground for high-voltage, high-current AC power.

Electricity takes the path of least resistance. If you (or your spouse, or your child, or your pet) offer a better ground path than an RCA signal ground, guess which path a chassis leak will take? :-(
I just plugged my Sirius satellite radio home dock into my AC Enhancer via a cheater plug because it didn't accept the three prong plug. Do I need to run a wire from the cheater plug to the ground screw on the AC Enhancer? And how long do you think before my house burns to the ground?

Sorry, I couldn't resist the second question after reading this thread. But, I would really like a sirius answer to the first question.