humming question

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Post by Anonymous » Mon May 22, 2006 5:04 pm

I am a new bc owner with a noise question. I own a bc101 pre and a bc24 amp. I have had them for a few weeks now with no problems, until today. I powered my units up and when the amp came on I had a loud humming. Nothing had changed in my setup. I tried moving things around and unplugging all other items but the BC gear to no avail. The ground lift switch is in the down position but when moved up the humming goes away or at least severly diminishes. I put it back in the down position and posted here. Any advice?


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