VPI PLC ground/hum problem--HELP

These PLCs weren't the most reliable units in the world. VPI couldn't fix mine (bought used) and sent a brand new one - great customer service. I'd give Mike at VPI a call (Tues. thru Fri.). Better yet, I'd pick up an SDS. It's better in every way. Good luck.

You may not be experiencing ground hum. The PLC II is noisy. It vibrates right along with its transformer, audible above much of the sound. Put large sorbo feet under the unit and a VPI brick on top. That knocks some of the noise out, but leaving it on all the time helps even more. Just removed the PLC II from the system and replaced it with a Walker Precision Motor Drive. Guess what, I can hear it running, too. Had to put Walker discs on top and points underneath to quiet it down. The transformers and/or motors make these things noisy. Hope someone out here on Audiogon has a better way to calm these things down.