is the amp itself humming or do u hear the hum through your speaks? if the former, the hum is likely from the transformer. this is not normal & will likely not b fixed with a power conditioner.
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.