To be clear for power.
Any amps (or high-current devices) should be plugged directly into the wall outlet. There should be no surge protection going on. The only caveat is properly designed high-current remote relay switching systems that may/may not have built-in surge protection.
All electronics that require longer than ~1.5s bootup time (digital mixer, computer, digital snake, etc) should be on UPS that-is battery backup. Pure sinewave preferred.
I suggest having a surge protector for the UPS as they are usually only 600j and a Panamax MD2 is 1350 with other additional protections.
Lastly, a sequencing system that turns amps on last and off first (compared to the mixer/dsp) is a very good idea.
The power bar we're using is the Furman M-8x2 Power Conditioner. It’s also a surge protector. (Sweetwater). I have the digital mixer on a UPS in case of any sudden utility power glitches.
I’ll look into that “remote turn on from stage” suggestion.
That M-8x2 is not a surge protector by any stretch of the imagination. And your amp should not connect to it in any-way-shape-or-form.
The UPS is always a good idea. Surge suppressors and line filters don't add a lot of value over a conventional power strip.
If the power strip is decent, I agree.