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RE: Grado RA-1 Battery -to- PSU Mod. Issues

Yeah, that's kind of how I figured it but that's not what's happening for whatever reason. I've tried 3 different DC units, swapping out one of the pair for another and always get the same result. Short of chopping into them I can only guess that the grounding scheme is at odds with the RA-1.'

On another note, I'm find direct measurement of the DC output of the 3 to be wildly different; 8.6V, 11.5V, 13.5V. Even another 7V unit I have reads 9-10V. Why so much variation? I just assume when the output is listed as 9V it should be fairly close.

I think I'll just have to stick to batteries.


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