OP, be aware that cable and router boxes can cause a lot of noise in your stereo. Look there if your using it for a source.
Noise, routing is usually a problem, cables just can't be plugged and dropped.. NONE of my cables touch. It looks like "Cable art". That's right "cable art". Lift cables UP and DOWN and see if the noise Yo Yo s. IF it does it's routing. If it stays the same, it's a ground loop, like MC said..
A difference is voltage between components. 10.00 usd Ground Loop eliminator will fix it.. Otherwise, Routing is your friend..
Plug and unplug can clean things too.. Years of storage.. just saying.. CLEAN is good... Plugged in all the way, too.. ALL THE WAY...
Valve amps.. pull the valves and reseat them.. stuff like that.. ALL THE VALVES.
Regards
Noise, routing is usually a problem, cables just can't be plugged and dropped.. NONE of my cables touch. It looks like "Cable art". That's right "cable art". Lift cables UP and DOWN and see if the noise Yo Yo s. IF it does it's routing. If it stays the same, it's a ground loop, like MC said..
A difference is voltage between components. 10.00 usd Ground Loop eliminator will fix it.. Otherwise, Routing is your friend..
Plug and unplug can clean things too.. Years of storage.. just saying.. CLEAN is good... Plugged in all the way, too.. ALL THE WAY...
Valve amps.. pull the valves and reseat them.. stuff like that.. ALL THE VALVES.
Regards