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
"Shorts or hot wires cause electrical fires. Don't breakers deal with shorts?"

Thanks, good point. What is the chance of being grounded and touching the chassis when the chassis is hot anyway. I'll risk it and so does my family.
The chance is extremely high that you are grounded. TBG's pride is hurt. RESPECT ELECTRICITY!
Thank you all for your responses and advice.
(1) TBG, Gregadd, and Rex--I respect all of you replies and will investigate/research your ideas.
(2) AvGuyGeorge--I noticed no difference in sonics with the amp connected to the wall outlet vs. monster unit
(3) Darrylhifi--I don't know why some reputable companies make power cords with removable ground pins: It must be that under certain conditions the ground pins are not necessary. I think you have to be careful not to conclude that since they are removable they are not required. I'm too ignornant to know what would be appropriate electrical conditions to remove the ground pins. Will do some research here.
(4) Warnerwh--My toaster has 3 prongs. Maybe I have some "electrical ground phobia issues"?!

Gregadd has a very important point: Respect electricity. I need to understand with 100% certainty that a ground manipulation is safe, and will continue not to use cheater plug until then. Is it worth it to put yourself and family at risk? As an audiophile, I have gone though extraordinary measures to improve sonics for the quest of stereo nirvana--but we all have to be careful and knowledgeable about the electronics.

Respect Electricity.

Thanks again,
Rob
You are right, I am a very prideful guy. I am off to lick my wounds. LOL.