New Dedicated Line - Almost No improvement

@theaudioamp Just pulling "isn't that against the code" out of thin air isn't helpful for anybody.  No, it is not against the code. There are a lot of 240 appliances that need outlets.  My home had 3 different 240 outlets for different appliances.  There are codes that govern the installation.

But you did hit on one of the big problems with battery systems--the cheap inverters they use.  The inverters for most commercial battery systems produce little more than a square wave.  They would be a huge step backwards.   One reason power regenerators are so expensive, the main reason, is that an inverter that makes a perfect sine wave is very expensive.  In fact, I don't know where to buy one except in an audio market power regenerator.

And I see mention of rhodium like it is the latest supermetal.  Shows how eager people are to jump on a buzzword.  Rhodium is a poor conductor of electricity and has no place in audiophile electronics.  

@carsbad. Pure sine wave inverters are not very expensive at all really. I can buy a 1000W unit out of Asia that will produce a fairly accurate sine wave for < $100. They are a dime a dozen on Amazon, Alibaba, etc. At light loads they produce good sine waves. At heavy loads there is some distortion. I even quickly found a DIY link for a 1KW pure sine wave based on old technology. The person built it for <$50 of parts. Probably not much of a market for those big old transformers so they are cheap.

Rhodium is an adequate conductor of electricity for a coating that is 10-20um. You would need very good equipment to measure the resistance of a coating that thin. It is poor because it is very hard.

You can’t install 240 outlets willy nilly. The NEC is written to prevent that. They can only be legally installed to support a device that requires that level of power (not voltage). Those appliances you have have 240V outlets because they require the power that 240V can deliver. It is NEC 210.6 (in complete) that specifies this.

The conversation has degraded to burning in AC power outlets. I think we have lost the plot on the conversation already.

Ignorance is bliss... It’s Not about burning-in just any outlet.

Two threads of many from the Agon archives...

Furutech GTX NCF receptacle break in, how long

Furutech GTX-D Rhodium NCF Outlet

I can provide a bunch move Links on the subject from users that have experience with the Rhodium plated copper contacts on the Furutech GTX NFC outlet.

My bet is the OP’s problem is with the outlets.... 35 hours of burn-in is nothing. Some of the loads that are plugged into one of the outlets may be less than a half of an amp...

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Laynes- I fail to understand what in your post is the actual SQ problem?

Your PL has noise suppression   circuitry. As mentioned, a good piece  of equipment with  adequate power supply is really all that's needed. You have the dedicated line, which is a good move.

If you're bent on having more audiophool stuff, there's AC regen or Audioquest Niagqra PLC's. Both get favorable reviews.

PL HP user/PS Audio PP.

The PL is good enough to not need any of that stuff, but alas,  this is the hobby. 

I will take that bet @jea48, friendly of course. I am sure there are lots of phile reports of Rhodium sounding wonderful. Not hard to find many listening reports from philes are are simply impossible. Has not been a barrier since the start of audio.  We are not the most skeptical bunch.