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

@ricevs - Too bad it was actually the Bluetti AC200P which uses their older inverter design that according to Hobotech is much noisier than their current MAX series of inverters. The control software is also different. Anyway, I've been looking at your webpage again (great info there) and will probably build a Giandel 5000 system.  

I have an Entech power line noise analyzer arriving on Monday. OCD Mikey used one in his videos regarding the Puritan conditioner and they are fairly cheap.

ricevs,

Too many variables between the compromised Bluetti AC200P and the Goal Zero Yeti 400 with its woodblocks and PPT.  I thought you were using the Yeti with your front end only, not with power amps.  The most meaningful A/B you can do is between your Yeti 400 and your friend's Amperetime/Giandel, both used only on his front end.  Your Yeti 400 can't handle the power amps, unfortunately.  But maybe you remember the Yeti 3000 which can handle the entire system, and how it compared to the A-time/Giandel in your friend's system.  How did the Yeti 3000 and A-time/Giandel compare for just the front end, and the whole system, for bass and the other sonic aspects?

I use the Yeti 400 for the whole system...the front end components are hardwired into the inverter and I plug the power amp into it with a connector.......that is why I could not do the full system on both.  Who would A/B a $400 all in one with a $2800 giant Gaindel system?  No one.  As I have stated over and over again.......the Yeti 3000 was beaten by the Ecoflow Pro which was annihilated by the Gaindel system.  I have no idea how the Yeti 400 compares and who cares.....it is too small to use for most people and has a noisey fan (which I made silent by removing most all the casing).  My friend uses the Giandel sytem and used the Yeti and Ecoflow on his entire system.  Get out of your head!!!!  Just do it!!!!!

The Entech will tell you something but not much.  People are already modding the Puritan 156 (which would not even measure with the Entech). and getting better sound (and that better sound has NOTHING to do with a measurement).  We are talking better jacks, better wires and Fo-Q treatment.  I will be installing burned in Furutech outlets and inlet and better wire on my friends Puritan 156 next Wed.  Most things that make for better sound CANNOT be measured.  An inverter that measures lower with the Entech may sound way worse than one that measures better......this game is complicated.

Why not use a 36 or 48 V battery and connect it directly to your amp's internal diode bridge rectifier, bypassing all troubles from 110/240V, inverters and what have you? It'll be a lot cleaner, and cheaper.