RFI - Turntable Rig

Morning All,

Another RFI thread and would appreciate everyone's help as it is driving me crazy!

I have a TW Acustic Raven and a Whest Audio PS30RDT Phono Amp running through an Audiopax Model 5 preamp. Tonearm cable has a grounding wire that is connected to the ground of the Whest amp. I have a Tara Labs The One Series 2 between the Whest and the Audiopax. With my CD Player selected it is dead silent - however, when switching to analog I have a fairly substantial hum and also what seems to be FM radio. I recently swapped out the Whest for my Ray Samuels Nighthawk and the RFI disappeared.

All equipment is plugged into a Purepower 2000 AC Regenerator. I guess I have a potential ground loop and should remove the grounds on power cables as Purepower is grounded through the powerchord to the wall but I believe this does not explain the RFI.

I am considering experimenting with a balanced cable between Whest and Audiopax to see if this helps but any other suggestions appreciated. I have not been able to run a ground cable from the TW Acustic as seems to be no available grounding point - has any owner managed to ground this table?

Thanks in advance

James