Pearl Two

I don't think so, although I have started a pair of boards.
The article is nearly done, so it will launch very soon.
:cheers: --- :D

P.S. Designatiions and values are printed in white over a white sheet....
well... that is clear now :bulb:, I admit, I had not figured it out based on the laptop comment. I just thought he was :drink:
guess t'was a bit of an easter egg... :treasure:
 
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Gain is adjustable. Because EQ is passive just change second stage gain.
The power supply is just three terminal regulators and you can do anything to feed them or replace them. Current draw is only 35 ma's or so.
Nelson has all drawings measurements etc.