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help disigning 12AY7 based mic pre

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Hi,

I recently purchased a 12AY7 based mic pre removed from an RCA BC-3C mixer. Follow this link for schematics, a picture, and BC-3C block diagram:
http://www.idealfreedistribution.com/preamp.html
I was looking for suggestions in building the input section and output section (especially transformers) and building (or purchasing) a power supply.
Any help would be appreciated.
Thanks,

Craig
 
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