Can you measure the voltage and THD of incoming current that you are getting? And the turntable speed.
Power conditioning can be a complicated thing, you might have to experiment a lot. My case was simple - I had fluctuating voltage and dirty current in the apartment. Until very recently I was using inexpensive Furman voltage stabilizer/conditioner. It didn't stabilize well, cleaned up the current a little but not well. Now I have PS Audio Power Plant Premier regenerator and the difference is huge. But your situation is different, and those two subs require an additional thought.
I would probably first try something with the turntable and phono only and then go from there. You could start with PS Audio Dectet conditioner from Music Direct for $400 that can be easily returned.
Power conditioning can be a complicated thing, you might have to experiment a lot. My case was simple - I had fluctuating voltage and dirty current in the apartment. Until very recently I was using inexpensive Furman voltage stabilizer/conditioner. It didn't stabilize well, cleaned up the current a little but not well. Now I have PS Audio Power Plant Premier regenerator and the difference is huge. But your situation is different, and those two subs require an additional thought.
I would probably first try something with the turntable and phono only and then go from there. You could start with PS Audio Dectet conditioner from Music Direct for $400 that can be easily returned.