DCAudioDIY.com

My gut feeling without looking at the details is that if you are going to use the powerwall to provide isolation from line noise it will be a very expensive solution and may introduce more problems than it solves. DB can probably provide more info on inverter and switch mode power supply noise but I think you may create lots of noise problems.

If you want to do a test to see if a very clean AC supply makes any difference I can loan you a Crown Studio Reference amplifier that can be strapped to swing over 200 volts at full output. I can also loan you a very low distortion signal generator. You can precisely set the 60 Hz frequency with the signal generator and feed it to the amp. You can then use the volume control to set the exact voltage output. Since that amp has an output impedance around 2 milliohms. it has a very stable output voltage. I can guarantee that the power will be cleaner that way than with a battery driven inverter.

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Walt

I was pondering doing B+ with cells in series and filaments with cells in parallel rather than doing an inverter. There had to have been a lot of tubes that were designed for lower B+ voltages.

ray

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Walt

Even though I've been in this house for 15 years with no hits that caused damage, I think I am going with the whole house solution that Walt suggested. It seems to be a good compromise, without spending big bucks.
With all the BMA and smart chargers available now I think the LiO battery solution makes sense as long as one uses premium batteries and stay away from cheap Chinese imports. Using the battery to maintain charge on super capacitor looks like a good low impedance solution. Plenty of you tube help with this.