After trying cheater plugs on each of a dozen components and then taking them out of the system one at a time, I've recently changed the interconnects from Nordost SPM to Kimber KS1020. The audible hum is now gone!
It's unshielded vs shielded that eliminated the hum in my system. My preference is the faster SPM but the tradeoff to eliminate the hum was worthy of the change. Change the interconnects.
It's unshielded vs shielded that eliminated the hum in my system. My preference is the faster SPM but the tradeoff to eliminate the hum was worthy of the change. Change the interconnects.