Power amps into surge protector/Conditioner or DIRECT to wall? Final verdict?

1. Whole house surge protection.
2. Multiple, de-rated, 20A dedicated lines.
3. Separate lines for each amplifier (system is bi-amped)
4.) Separate lines for analog and digital.
5.) Every component goes into a power conditioner.

whole house surge protection!

great idea. no question about it.

however, not a solution if one lives in an apartment or condo.

additionally in homes, installing an isolation T former would be a help.

Dedicated lines are a very good idea though these only reduce, and do not eliminate collateral noise. remember all the neutrals and grounds are connected at the service.

installing dedicated lines should then be on the same phase and if possible, a phase different from what is supplying most major appliances. as said, Micros, 'fridges, dish washers, washing machines, etc.

avoiding the lines ovens, dryers, and hot water heaters use is unavoidable as they are sucking off both phases periodically.

several problems solved!

... but then we're back to the reputed grunge living on the incoming power and a consequent need for filtering it out, or at least ameliorating it.

Pretty expensive solution cleeds. I'm not sure why everyone thinks separate lines will reduce noise. The are all connected to the same main.
Any power supply worth is salt filters noise. It should be particularly good at filtering 60 Hz noise. You would get much more bang for the buck buying a more powerful amp than buying a line conditioner.  Put shorting plugs on the inputs of your amps and put your ear right up to the speaker. You hear any noise? I don't even with my preamp hooked up on a shorted input with the volume all the way up. No noise, none. Yes the phono preamp has some tube rush. Preamp on my usb input to which my computer is connected with the volume all the way up, no noise. All my front end goes to one surge protecting power strip. The amps have 20 amp dedicated lines but no power conditioner. No noise. People will say that I am just lucky and have clean power. Every modern system I have set up is powered the same way, no noise ( excluding phono amps). I also do not use analog preamps which is part of it for sure. Analog preamps will have at least a little noise. Does a little noise affect the sound quality. If it does us vinyl people are in for it. Is it all just a marketing scam aimed at gullible audiophiles?

@erik_squires  Thanks for your feedback Erik and all the clear & concise input you have contributed to this topic in the various threads over the last week. It has been helpful and very much appreciated.

@blindjim  Thanks for your empathy and encouragement in this confusing topic.

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