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

@theaudioamp I suggested the PS Audio unit because that is something many people here own and the test data will be consistent.  The level of electrical knowledge here is generally not very high so buying test equipment and using it competently is not likely a plan that will lead to useful data.

The PSA P300 is a favorite of mine, though it has limitations. The idea that a regenerator can reproduce the expected AC wave form is essential. Currently, an engineer and I (mostly him) are working together on a higher performance P300. I cannot give too many specific details, but in general capacitance has been increased, and output transistors in the P300 amp have been replaced. Getting NOS parts for some other issues make it slow going. Still though, those damned transformers get too hot! Might have to rethink that as well.

 In the end, I like the concept of balanced power, and have been using a BPT product for many years. Each secondary (6 in all) have separate windings, allowing different components to have their own circuit. Between that and the balanced concept, I am happy. Power amps do not run off of this unit, but use a grays power 400S in parallel with the AC input. Again this a good idea for me.

Viber,

You are a rehasher......you restate what others say but add your own "color commentary". You quote me above and then you rehash it again....but again you cannot get it right. I did not say "a larger inverter would sound better" What I said was ’I would think......and probably"..... Maybe you cannot read? Or do you just like drama? Again, I don’t know nothing. Does a larger inverter have lower output impedance? I do not know. Does a larger inverter have a larger power supply? I would GUESS it would. Stop making things up!

You can buy cheap AGM battery to try (with refund capability). You can buy Renogy LifePo4 batteries through Home Depot.....and I (THINK....MAYBE...YOU BETTER CHECK) they have return policy......you can build your own LifePo4 batteries real cheap......lots of alternatives.....if you really just want to dip you toes in the water.

Guys.......regenerators and balanced power compared to a great sounding inverter is like racing a model T against a Tesla.  But you will have to try the 5000 watt Giandel to know.  You know nothing without listening.  You have invested in the past.....now it is time to listen to the future.......which is now.....always now.  What you did before does not make it great NOW.

@ricevs , while I agree with you about Viber, are you not doing exactly the same ?  You have not done this testing on your own but are just repeating what your friend has told you. I think you have tested Goal Zero but not evident you have tested anything else.

No one has A/Bed inverters that I know of except my friend who said the Ecoflow Pro beat the Goal Zero Yeti 3000 and both where trounced big time by the 5000 watt Giandel. That is all I know. We are in new territory here.....this is why I suggested you or someone buy both the large and small Giandel, the Bluetti and have a comparison party. You could A/B cheaper heavy AGM batteries with LifePo4 batteries, as well.

I personally would go for the Giandel because my friend (who has an $80K super revealing tweako system using super modified Apogee speakers) is the one that tested the inverters......he has great ears.....

Why don’t you become the Inverter tester for the world. .........

You can afford it. I bet you have that much on a credit card (maybe $4500 total?). Whatever you do not like, you return for a refund. I would do this.....but I have no credit/money......

What is theaudioamp man about? Do you want people to get better sound? What is your shtick? What components have you heard recently that have made your stereo sound better? Will you help us? Do you want to help us? I (and some others here) want better sound....what do you want?