Hum from amp - should I worry?


I recently noticed a hum coming from my Meridian 557 amp. I don't use a PLC, so I wasn't sure if that could contribute to the hum or whether the hum is normal. The 557 is, of course, a solid state amp, so this doesn't seem normal to me. Any advice from current 557 owners? Thanks.
knox

Showing 1 response by tap3sap

I have a Belles 150 A hot Rod, that has a transformer that hums once in a will. According to David Belles this is caused by to much voltage or to little in the power service to my house. I do not know if this is true, but the amp has been dead quite for weeks.