i have a low hissy humm now from my speakers when they are hooked up to my amps and not my pre(even when hooked to pre)
had a electrical storm this past weekend and i just unplugged the amps -when i replugged them the problems started
no matter what amp i use-4 different monos and a harmon kardon-
i cleaned all my grounds at the breaker box-
un hooked cable
and all appliances-still there
lifted grounds on everything
HELP