Dedicated lines fixed hum problems in my system.
Subwoofer hummmmmm
Running a Vandersteen 2Wq sub, connected to a NAD 375 Bee integrated amp. The sub is plugged into its own electric socket. Vandersteen recommends it be kept on all the time. When the amp is turned on, no problem. When the amp is turned off, the sub emits a low hum. All thoughts, suggestions welcome.