I spent $400 to find the right piece to tame my speakers after installing an Outlaw x7000 amp. For some reason it makes all my speakers hum, i tried to connect all the cables and connection cords, there was no hiss when i only had emotiva basx 5, when i plugged in the outlaw amp everything started humming, i used a ferrite magnet for my RCA connection but it didn't work, i bought an AC isolator, after still not working i bought an IFI AC purifier after 2 days while waiting for it i saw thisโฆ