Looking at your list, a few things jump out and then later on when you said your amp is plugged into a Furman
* Plug your amp directly into the wall (you can also get a cheater to float the ground)
* Machina Dynamica New Dark Matter in the CD tray (the best $40 you can spend)
* Core Power Tech makes a Deep Core, which goes between the PLC and the wall outlet
hth
* Plug your amp directly into the wall (you can also get a cheater to float the ground)
* Machina Dynamica New Dark Matter in the CD tray (the best $40 you can spend)
* Core Power Tech makes a Deep Core, which goes between the PLC and the wall outlet
hth