Should have kept the P15.
Buy a used P10.
PS why isn't your dac, streamer, TT etc plugged into it. I have Dac, streamer, upscaler, 5 linear power supplies for Roon Core, upscaler and DAC, PS for network switch, all plugged into mine.
Depends how concerned you are with longer term voltage fluctuations.
If that's not a big worry, I like the Furman Elite series if you want a rack sized device, a strip with LiFT and SMP otherwise.
If voltage sags or overages are a concern, get a Furman with LiFT, SMP and voltage regulation.