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Eliminating RFI

Dear All
I am experiencing problems for the first time with RFI through my Singlepower headphone tube amp. I have concluded that it is due to an unclean power supply as I do not pick up this interference using a wall plug in another room in the apartment and as I have also swapped out power cables and interconnects in the room to no effect. Most of my equipment is UK 240 volts and I run the mains (Brazil 110 volts) through the transformer to the equipment - however, I have never experienced any problems with this equipment - but as the headphone amp is 110 volts I am running it directly through the Brazilian mains (without the transformer) and I am now having problems.
Does anyone have any suggestions for me to eliminate this interference? I need to keep all my gear in this room so moving it all to another room is not an option unfortunately.
Many thanks
James
vicks7
etbaby
138 posts
 
Hi,

EMI is tricky. I suggest that you check that the outlet ground is connected and securely tightened. Also other devices connectd on that same electrical line can re-radiate EMI back into that outlet. See what else is on the same line and unplug each device one at a time to see if the problem goes away. Be very suspicious of computers.
sns
3,193 posts
 
You may want to try some Stillpoints ERS cloth, just a little should do the job.
bigjoe's avatar
bigjoe
693 posts
 
buy a cary audio cad 5500,its a tube cd buffer that removes RFI from the signal & it works like a mo fo.
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