Safe to use cheater plug on CD player??

I hope you guys don't mind me copying and pasting from Audioasylum, where I already has posted this. But it just was a lot to type over again. Here it goes.

"Well as some of you suggested, I tried finding a ground issue within my setup that was cauzing the dreaded hum. It is strange to note that this amp always has a slight buzz, even with no components or speakers hooked up through it. I used to use a Arcam CD72T that did not add any noise to my system when plugged in, or turned on. I remember trying to use a cheater plug on the cdp, and tried switching the cheater to the amp. No change in the buzz.

So 2 weeks ago I upgraded to the Primare D20, which I love! Well this player adds tons of noise when it is turned on out of standbye. So today I put a cheater on the player's power cable. And voila, no hum. hmm. I still have a very very slight buzz, but that was the way the amp always has been, and it can only be heard about 3 inches away from the speaker.

My question is this; Will using the cheater plug on the cd player's Cardas power cable degrade sound a lot? And is this a dangerous move? I mean, I thought using a cheater on the cd player is a lot better for sound and safety than using it on the amp. It seems that even if sound is degraded, getting rid of vey loud and constant hum would be a greater benefit."