We may want to "sticky" this
http://www.epanorama.net/documents/groundloop/
http://www.audioholics.com/tweaks/c.../ground-loops-eliminating-system-hum-and-buzz
http://www.soundonsound.com/sos/1994_articles/aug94/groundloops.html
http://en.wikipedia.org/wiki/Ground_loop_(electricity)
http://forum.ecoustics.com/bbs/messages/34579/180767.html
http://www.trinitysoundcompany.com/grounding.html
http://www.native-instruments.com/k...to+get+rid+of+ground+loops+(50+or+60+hz+hum)?
http://www.peavey.com/support/technotes/soundsystems/humandpin.cfm
http://toonz.ca/bose/wiki/index.php?title=Ground_Loop
http://www.virtualdj.com/wiki/Ground Loops.html
http://www.epanorama.net/documents/groundloop/
http://www.audioholics.com/tweaks/c.../ground-loops-eliminating-system-hum-and-buzz
http://www.soundonsound.com/sos/1994_articles/aug94/groundloops.html
http://en.wikipedia.org/wiki/Ground_loop_(electricity)
http://forum.ecoustics.com/bbs/messages/34579/180767.html
http://www.trinitysoundcompany.com/grounding.html
http://www.native-instruments.com/k...to+get+rid+of+ground+loops+(50+or+60+hz+hum)?
http://www.peavey.com/support/technotes/soundsystems/humandpin.cfm
http://toonz.ca/bose/wiki/index.php?title=Ground_Loop
http://www.virtualdj.com/wiki/Ground Loops.html