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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 3 responses by 7671

7671
163 posts
 
I have a Meridian 557. IT doesn't hum unless I use XLR interconnects without using the shorter plugs into the RCA inputs. If you put your ear next tothe 557 you will hear a slight hum in the unit. Inaudible from a foot away.
7671
163 posts
 
Enjoy the 557. It is a great amp that has been missed by the audio industry!! When coupled to the Meridian 502 pre-amp and 508.24 cd player, it is awesome sounding.
7671
163 posts
 
Electraglide FatMan on amp and Fat Boys on cd/pre-amp. MillerSound giant speakerwires(kock off of JPS superconductor 2 wires)two separate runs in bi-wire format and balanced Delta Lab silver interconnects on CD to pre-amp and pre-amp to amp.Delta lab power cords on electostatic speakers and line conditioner.
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