In Reply to: RE: Grado RA-1 Battery -to- PSU Mod. Issues posted by Roastaman on January 12, 2016 at 09:59:53:
The wall warts you tried likely aren't regulated. That means their DC output will vary based on AC voltage at the wall outlet, the impedance and current draw of the device they're powering.
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Follow Ups
- RE: "Why so much variation?" - 1973shovel 06:07:42 01/14/16 (0)