Using battery power to go off the City's power grid

Nice option.... certainly a better value than the expensive regenerators and you get multi-functionality with portability.  It would be fun to do a side by side SQ comparison with PS Audio PP.  I have a solar back up outlet connected to 2 AGM batteries with a 24v Powerbright 1000W Pure Sine Wave Inverter feeding it. Not sure how good the inverter might be. A week ago I decided to hook it up (with a 25ft 14 ga extension cord) to my main system for kicks and wow that was an amazing change. Black background, clarity, sound stage, separation etc..... AC is still very good just very different in a good way.  Now I I have to figure out how to run romex and install an outlet to my system ughhhh.  

@viber6 fyi- i use 2 agm 100wh batteries with my  24v powerbright pure sine wave inverter for a total of 2400wh. I have 2 of these outlet setup’s on both sides of my home.  Each outlet set up cost me less than $500.  Already had solar set up to feed both controllers. (I could easily expand to 4 batteries if more time is needed.)

As for grounding, I buy an inexpensive audio power audio cord on amazon that has plugs that can be removed and take all 3 wires and connect them to the ground only on the male plug.  Then on the female plug I replace it with a spade to use it as a ground only connection.  Works well for my DIY ground boxes as well.

Thanks for sharing on video.  Fun tool to play around with for $40. I have multiple conditioners on 2 systems and 2 solar battery (48v AGM) backup outlets with different inverters that I can use it on to compare results.  Should be fun to hear the  results.