Strange Noise.


Hi Marshallers!

From the first day when we turn on the amplifier there is a brief whistle-like sound that comes briefly through the speakers. What causes this and can you guys tell me how to fix it? It is not too annoying, but in a theatre show with a big PA we need to check the amp is turned on before the show because the noise would be intrusive if we turned it on during the programme. 

Many thanks




asked 27 Aug 2016 at 12:52 PM

Stephen Galvin Last Name
Answers: 1


Hello Stephen,

What amp do you have?


Team Marshall

answered 30 Aug 2016 at 08:32 AM

It is a 410C. Thank you. As I had registered the amp on your site I thought you would have that information available. Yes a brief whistling sound when turning on the main power switch. Also devastating when using headphones. - Stephen Galvin Last Name 04 Oct 2016 at 09:59 AM
We would recommend that you take it back to the dealer it was purchased through so it can be looked at, as it sounds as though it is faulty. - Marshall 04 Oct 2016 at 01:20 PM
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