I hope this thread is in the right place. I also hope the title is clear enough.
I seem to be having a problem that I can't understand. I have recently bought an LED strip with a dimmer switch and a power supply. This is nothing audio related but however, when I adjust the dimmer switch, my amplifier (Pioneer A-209R) allows the buzz of the power supply for my LED strip to go through to my speakers. This only seems to happen when my amplifier isn't on Direct. I like to turn the treble up a bit, so I prefer not to have it on direct as I can't adjust anything. I did somehow expect the power supply for the LEDs to make a quiet buzz. I just didn't expect it to pass through my wall sockets in my room!
I first plugged my LED power supply into the same 5 gang extension as my amplifier. I thought that could be related. I then tried in the spare wall socket and that sound still strangely travels to my speakers if my amplifier isn't on Direct.
Is there such a thing as a plug that can filter out all noise that is especially for audio equipment. I don't know anything about this type of stuff so I can't be sure if such a thing exists.