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
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.
Ldatlof - the only Sirius home dock I know of is the Audiovox, and it uses a wall-wart power supply - no AC fed to the unit. In all siriusness, if you're using an AC Enhancer on a wall-wart, your house has already burned down, and you were in it.

Tbg - your obviously fragile and still-bruised ego is showing.
Easy explanation - you posted an attempt at a snide remark, aimed solely at me. Apparently your little feelings are still hurt.