I have read about the pros and cons of using a cheater adapter like this. But I have a unique situation that isn't covered in anything I've read.

I have a 3-prong grounded outlet and a 3-prong AV device. The problem is I am getting a ground loop buzz in my speakers. Using the cheater adapter eliminates the buzz.

I know that it is not recommended to use a cheater adapter to plug a 3-prong device into an ungrounded 2-prong outlet. But what if it is a grounded 3-prong outlet and you are just bypassing the ground prong? Is that safe/OK?

If that is not OK, would it be safe/OK to:

1) Plug a 3-prong surge protector into the outlet and then plug the cheater into the surge protector

2) Replace the outlet with a GFCI outlet and plug the cheater into the GFCI outlet

3) Keep using the cheater plug with my grounded outlet but connect a wire from the tab in the cheater plug to the faceplate screw (as intended) which should be grounded in this case since it is a 3-prong outlet. But I wonder if this would just reintroduce the ground loop buzz?