Hello @kingbr
The whole home surge protector is excellent, but it isn’t 100% coverage.
If you want a no-fills, genuine product without audiophile marketing and fluff:
Surge and Transient Protection | Bantam Clean Power
Go for one or more of their power conditioners.
I would advise keeping power amplifiers plugged directly to the wall if you can, and have an electrician determine that those specific outlets are ultra-safe - on their own separate 15A or 20A line as their power demands are far more dynamic than the rest of the electronics.
Attach ferrite cores to all your power cables 2 on each - one at the end closest to the plug, and the other closest to the AC inlet. You can buy these on amazon. Just measure the diameter of the cables with a tailor’s measuring tape that can be easily folded, so you get the right size in mm. This also works if you have audio electronics that have their own power cord, hard-wired to internal power transformers.
If you do this - the improvement will be dramatic. Remember - audio electronics modulate electricity, and if you can control how they do that, even at the AC level, so the conversion to DC and the overall transfer function to the speakers is more linear, then you get closer and closer to electrically optimal environment.
All the best with it.
In closing for now,
I would advise keeping the power/preamplifier/amplifier on their own power conditioner. Keep the source components and related components on another, so they are properly isolated.
Do all of this, and reveal the full capabilities of your system... :)

