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In Reply to: RE: Battery powered phonostages posted by AbeCollins on October 15, 2016 at 10:41:48
I'm interested in batteries not just for improved performance but for sonic consistency throughout the day and night. The whole "I wonder what my neighbour just switched on" thing drives me nuts.
Follow Ups:
Batteries have very high output impedance, so not really all that.
If you are that concerned about the power, get a PS Audio unit for your pre's. Probably a very small one would work for you. It would give you nearly perfect power all day long and you'd have more flexibility in your pre's.
Best,
Erik
Sealed lead acid (SLA) batteries actually have extremely low output impedance and they're relatively inexpensive. I've built battery power supplies using SLA batteries and they improved the sound significantly of one DAC I owned a number of years ago. I also built a Hagerman Bugle phono stage and I substituted 12-volt SLA batteries for the wimpy 9-volt batteries it was designed to use. It worked very nicely and the SLA batteries are cheap and rechargeable with very low output impedance.
It is pretty easy to build an SLA battery power supply for any phono stage that comes with a wall-wart DC power supply. I did that for an Audio Technica AT-PEQ3 phono preamplifier and I used the wall-wart to charge the batteries. It worked great.
Best regards,
John Elison
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John, you are one of the people here, I always consider very knowledgeable.The most well known power regeneraters are made by PS Audio, starting with the P300, first made in I believe 1999.
For front end components a new P3 or or a used model of any version will give you consistent AC.
For the OP, if you can find a used Camelot Lancelot Pro it is battery run. Or maybe they still have some available, see link.
Edits: 10/15/16
Okay! That's what I thought it was but I was wondering why you would recommend something like that when the OP was asking about battery power. An AC power regenerator has no relationship to a DC battery.
I think the OP was also concerned that the quality of his AC power varied during the day and night. Going with battery power would eliminate any influence from the AC mains.
A good AC power regenerator will solve the problem too. It takes AC in then 'regenerates' it as a stable and more pure AC signal. I use my PS Audio P300 on my source components for that purpose.
You can sort of see the P300 in my basement setup. It's display is showing 60Hz:
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