Main DC or AC true removal of Electrical interference

For one thing RF is coming in through the windows and entering the system through unused wall outlets, thus the cabling. Not to mention the electronics themselves generate RF, especially the microchips. I jumped off the AC grid for that and other reasons several years ago. There is the advantage of not having AC power cords, for example.

Other option is to bypass all together and get a pure sine wave converter and Sealed AGM batteries for my music system??? Like a solar array but just for music. Anybody done this? It sounds perfect in theory by bypassing everything your power line and Power company is adding to the AC not to mention you have another power source when things go seriously wrong.

I would not assume that any such device works in a theoretically ideal manner, or comes close enough to doing so to be a good choice for powering an audio system, without persuasive evidence providing confidence with respect to the specific model being considered. Especially given that such things may not have been designed with audiophile applications in mind.

Specifically, I would want assurance that the inverter circuitry in the specific model does not generate RFI or other spurious noise in itself, that may couple into the audio system.

For example, it may have some relevance that I use UPS (uninterruptible power supply) devices on some of my computers, of the type that generates pure sine waves. And I can tell you that if I bring a portable battery powered radio within a foot or so of these things the high frequency noise radiated by their circuitry is picked up very strongly in the AM band. And it’s probably safe to assume that the many inexpensive UPS devices which generate stepped approximations of sine waves are worse in that respect.

Regards,
-- Al

So I did it and bought and NPP 120 AH legit sealed AGM battery and a SUG 2500 watt continuous 5000 peak from Amazon. Little less that 500 bucks for both delivered. Also spoke with a tech guy to get the best longevity out of a Deep Cycle High Quality AGM sealed battery. These are my day one observations.

I ran all the AMPs two for bass one is 300 watts the other is 200 watts I dont know their idle but they are older and not class D so probably some juice there along with my main Pass Aleph 5 "TOTAL PIG 300 watts" at idle... damm space heater but best SS Ive ever heard. Also ran all the digi stuff house router modem preamp basically he whole systeme

First test only lasted 2.5 hours on a 120 NPP battery but background was darker deeper and "Mini Dynamics" were better defined and deeper.

Second its kinda cool that if the world goes to hell I will have still have my music.

Third Engineers in China (Yes I called them today) said dont let it dip beneath 70% and charge at exactly at 13.8 Amps to 97% full charge then trickle to 100% (possible 10 years) to get the battery to last as long as possible. Sounds like my X wife and why Im divorced but it will come in handy on camping trips and my X wife never comes in handy and I didnt get 10 years... haha. I will try no amps just digital gear and see how we do. I asked this question and no one spoke up so I tossed the money to see and these are honest findings so far. Is it worth it so far yes cause I can use it for other stuff. but the sound was no better than good cables that match you system. Again I will report back with Digi only equipment after I have had more time to play..

ALLGOOD

Yes its Pure sine wave 2500 watts