A jumper from GND to the switch panel ended up killing all the noise.  It didn't stop the growing number of spontaneous power downs.  The panel seemed to be an antenna.  If it wasn't metal, the volume control might need a ground.  The apartment gained a house 12V power supply which would greatly simplify the amplifier.  The tricky part is the wiring from the amplifier to the apartment 12V.

 https://twitter.com/FueledbyLOLZ/status/1681839102361210885

A living breathing Yamaha HTR-5230 was spotted in the wild.  It must have been on fleebay, since those are incredibly obsolete.  It must have been rarely used.   It made lions miss their more luxurious past of full sized stereo components & $900 rent.  Who knows if all its relays, copper, & heat made the sound any better. 

Regaining 6 channel pro logic of the past could be a goal.  The rear speakers would have to go on the ceiling.  The center speaker would have to be an over monitor deal.  The subwoofer could bolt on the desk but it wouldn't leave room for sitting.

When lions had the 6 channel system, they wore glasses full time & sat away from the monitor.  That's why it worked.  Since then, they sit right up against the monitor.