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Old 24th December 2013, 04:22 PM   #1
diyAudio Member
Join Date: Aug 2006
Default Sophia 300B+ carbon

I am thinking about building the damn good 300b from Neurchrome web site. I have been looking at Sophia Electric site, they list a 300B+ with double the filament current, double the plate current and half the output impedance, Tom at Neurochrome (and here) let me know his design can be modified for this tube. I don't want to wind up with just being able to use this expensive tube anyone have experience with this type of 300B? Thanks
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