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RE: The MP-1 and MP-3 servo system

Thanks Lew. I'll check with Ralph.

I was also thinking a socket adapter would be the way to go. I believe the MP-1 employees a +6.3V and -6.3V regulated filament supply for the 12AT7/12AU7 and 6SN7 tubes. 12AU7 filament spec is 12.6v/0.3a or 6.3v/0.6a and 6SN7 is 6.3v/0.6a. I need to check and see if the 12AU7 in the MP is running 6.3V or 12.6V filament and see how the off-the-shelf adaptor is wired.

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