dave_onstage

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Dec 26, 2023
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Hi there,

I recently bought myself a Yamaha R-N600A network Hi-Fi amplifier. When the volume is as low as it can go, the speakers and headphone output make a very low humming noise (around 50Hz, audible if close enough to the speaker).
Do you think it may be a defect with the amplifier? Or a ground loop problem? I can often hear electrical humming noises in my house so I guess it's to do with a ground loop.

Many thanks,
David
 
Hi there,

I recently bought myself a Yamaha R-N600A network Hi-Fi amplifier. When the volume is as low as it can go, the speakers and headphone output make a very low humming noise (around 50Hz, audible if close enough to the speaker).
Do you think it may be a defect with the amplifier? Or a ground loop problem? I can often hear electrical humming noises in my house so I guess it's to do with a ground loop.

Many thanks,
David
Not too sure you can have a ground loop without knowing what you have connected to the amp itself.
 

My2Cents

Well-known member
Nov 10, 2023
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Although the UK version of the R-N600 may come with a 3 pin wall plug I think you will find that it doesn't actually use the ground pin. US spec. versions only come with a 2 pin wall plug (with a standard 3 pin IEC male socket on the back of the amp. the ground pin of which is not used).
 

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