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In Reply to: RE: Battery powered phonostages posted by erik_sq on October 15, 2016 at 20:03:18:
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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- RE: Battery powered phonostages - John Elison 20:47:01 10/15/16 (0)
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