Ferrite clamps - good or bad?

[Haselsh1]

Whilst I had my Yarland 300B SE amp I used to have to put up with a strange noise rather like a rustling sound at very low volume. I changed all of the valves but the 300B's and then fitted ferrite rings to the interconnects. The noise stopped completely. The cause...??? I don't know but RAF Fylingdales is just a little way down the road and they transmit some very powerful radio signals.

[Spectral Morn]

Whilst I had my Yarland 300B SE amp I used to have to put up with a strange noise rather like a rustling sound at very low volume. I changed all of the valves but the 300B's and then fitted ferrite rings to the interconnects. The noise stopped completely. The cause...??? I don't know but RAF Fylingdales is just a little way down the road and they transmit some very powerful radio signals.

Sounds logical and more than likely the source.


Regards D S D L