I second the Powervar. Even with dedicated lines, my front-end gear's overall sound improved after hooking them into the Powervar. My amps, however, plug into the 20W wall outlets.
I have not tried any other purifiers, protectors, etc, since the Powervar. I have no reason to at the present time.
I have not tried any other purifiers, protectors, etc, since the Powervar. I have no reason to at the present time.