Eliminating RFI

Thanks - just what I have been looking for!!

Ok, seriously, here are some possible ideas:
1) Is there any way to run the current to the headphone amp thru your 240 volt stepdown transformer, or does it REQUIRE an input voltage of 240?
2) Or, if using ERS cloth, what I've been told is that lining the little outlet box casing with the ERS material is the way to do it, and not to use "too much."
3) Possibly consider a "power conditioner" that has its own transformer, or some even better technology.
4) Check the Singlepower owner's manual to see if there's anything about grounding which you may have overlooked.
5) Contact Singlepower directly for pointers.
6) Google search, if all else fails.
-Bill

Thanks Bill.

The amp runs on 110 volts and my transformer is a step up transformer which I use with my UK 240 volt equipment so I cannor run the amp through this transformer.

I presume my step up transformer is also cleaning up the power as I have never experienced RFI with this gear, only when going through the Brazilian mains.

I may try this ERS material - where would be the best place to use it on the amp? By outlet box, do you mean where the mains is located at the wall socket? Would you just stick it around/over this wall socket?

As suggested I will also contact Singlepower.

Thanks again

James

James,

I'm told that one needs to be VERY careful not to get any ERS paper inside any component chassis, because it has conductive particles that can really wreak havoc on the internal circuits of such equipment, with shorting, etc. So, if using on the amp, make sure to put it on the OUTSIDE, one sheet on the top of the unit to start with.

The part of the outlet assembly that I'm referring to is the housing (box) itself, that metal casing that the outlets sit within. I was told to just line the inner surface of this outlet box with a single layer of the ERS material. This means that the sockets would have to be removed, leaving the empty housing box, which would then be lined by the ERS paper. Apparently, the ERS cloth has a high damping factor, so if put TOO close to the signal path, or if used in too large of quantities, it can restrict dynamics. Staying just inside the box's inner surface should be okay, though. You may want to contact Stillpoints about this topic also.

It would seem to me that the first order of business would be to rule out a circuit malfunction on the part of the amp in question, hence the contacting of Singlepower as you mentioned. If that turns up nothing, then I'd proceed to the ERS cloth, and see if that would work.

The helmets would be a last resort......

-Bill