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AC hum with single supply and splitter

Martin mayhead

New member
I just got my Fosi Audio v3 mono block package - 2 amps with a single 10A supply, DC filter and splitter cable. I have to say I am quite disappointed because there is a mains hum (50Hz in the uk) that is clearly audible. And if one amp goes into idle before the other then there is a buzz. Obviously there are some nasty interactions through the common supply which a single DC filter doesn't address. I don't think Fosi Audio should be selling this package as it is because it is clearly sub-standard.
I'd like to know from he manufacturer how they're going to fix this issue for me and others that may be experiencing it.
 
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