Oh boy, another thread taken over by a futile subjective vs objective argument.
I'd only suggest vast majority here subjectivists, we like to experience things for outselves.
I can do initial experiment with Giandel for little initial outlay, lower wattage Giandel, lead acid car battery, cheapo battery charger, some cables. So, I hear improvement or at least potential, move up, I hear nothing, end of experiment. No big loss of money, and I get to experience rather than listen only to theoreticals. I prefer experiential learning to commands from on high.
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The audiophile objectivist needs to please the bot, subjectivist only needs to please him or herself. Man, I'm one happy audiophile having built a wonderful system based on trust in my aural perceptive abilities.
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I've tried battery power on previous dac and various streaming component lps. Limitations include inverter and just general parts quality of these devices. Versus my BPT 3.5 Sig isolated transformer pc, battery power had darker more veiled sound quality, transient attack blunted.
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Mine is rockpals 300W, around $500. Certainly mine is lower wattage, less expensive, but are you paying for better parts quality, inverter with higher watt versions of same basic design. I presume these all built in China, same factory or factories, similar parts quality.
So, I opened mine up, certainly not what is considered audiophile parts quality, just mass produced, common household electronics quality. I was thinking about modding with better wire, outlets, even then still left with cheapo circuit boards, inverter.
I very much doubt I was over loading inverter, rounding off transients. The most wattage draw I ever saw was 55w.
I presume Stromtanks priced in accordance with the quality of parts contained within. I do believe there is great potential with battery power supplies, I just don't think one can get by cheaply here. Presumably more of these devices will come to market in coming years, hopefully some will be audiophile quality.
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Mine is newer unit, lithium ion, mid price range of these.
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Think I'm going to experiment with @ricevs setup with Giandel inverter, easy and cheap for initial experiment.
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I didn't purchase the Rockpals for audio system, just thought I might give it a try since in house. I'll have to take closer look at Bluetti, Stromtank is certainly pricey.
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Funny you ask this @scott22. I long saw potential of going off grid, so back in 1998 I purchased N.E.W. DCA66, 60wpc class A SS amp that ran off 4 lead acid wheelchair batteries. Batteries supplied the entire 60 watts, charger, everything self contained within separate battery case and amp enclosure.
I also have Merlin VSM-MM, BAM module runs off four 9V batteries. At one point had plans and schematic to run off 12v car battery with far greater filtering and storage capacitance within power supply.
Surprised batteries have not become more ubiquitous within audiophile circles.
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@ I used one of early PSAudio regenerators many years ago, ended up much preferring my transformer based PC. Mine was one of the lower power PS, used only on front end components. Perhaps the newer PSAudio devices much better than previous generations.
I have yet to find satisfactory PC for amps and I've tried many. If battery power doesn't blunt transients could be well worth it. I don't recall blunting of transients with my N.E.W., so assume can be done.
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My equipment was not happy with a consistent 123-125V I was getting for years, transformers humming, can't be good for transformers. I finally built bucking transformer to be rid of the constant humming.
I did suffer both microwave oven and furnace motor failures during this period of high voltage. Since utility finally came in and fixed over voltage issue, no failures, no humming. I monitor my voltage 24/7, now between 119-121V, exactly 120V at least 90% of time.
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@theaudioamp I had forgotten about dc offset issue which I did know about at the time, this was many years ago when I had the issue.
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Doesn't make sense to turn on Giandel after equipment, you know how Chinese based manuals are, something usually lost in translation.
I always turned on my Rockpals prior to equipment power up, never had issue with in rush current. In rush current will be important consideration with both my dac and 845SET amp (if I chose to run on battery power), dac has bank of supercapacitors, 845 nearly 1000V at plate.
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+1@ricevs I've been working at noise reduction for years what with all my battery experiments, dedicated ac lines, conditioning, and now with streaming.
Noise reduction in streaming is so linear to ac cleanup in general sense. You are describing the exact qualities I hear with my present setup. My streaming and cd rips no longer sound like digital, simply sounds like performers in room, and better than my vinyl setup due to higher resolution/transparency.
If battery power could outperform my rather intensive ac cleansing this would be comparable or superior to major component upgrade. At this point trying to decide if my next move will be another network filtering device or battery power.
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@rudyb This is exactly what my N.E.W. DCA66 class A ss amp did, and this all back in late 90's! It was nice to have an off the shelf all in one package offering, thought I would have seen more offerings in such a package over the years.
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@dpop The setup you're speaking of is pretty much exactly replicates my AC setup!
Speaking of neutrals, recently I experimented with two of my diy power cord recipes. One has exact same number and gauge of wire for neutral and hot, the other has oversized neutrals. While I expected the recipe with equal N and H to outperform the oversized neutral coming out of my BPT balanced transformer based PC, result was quite the opposite. PC with equal N and H being more lightweight, bass shy, along with more hifi/analytical qualities.
I don't know how much this has to do with the way neutral is treated in my dedicated lines, but it is there. First discussion I've seen on the importance of neutrals!
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I never heard any hums, clicks when charging and listening with N.E.W amp, Merlin BAM or Rockpals battery pack on dac and different streaming equipment lps. Fan would be on with the Rockpals.
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