Ugly Charlotte phono amplifier
thingiverse
CNC / National Semiconductor datasheet phono amp As seen on Audiokarma My version is intended for optional resistor sockets, instead of DIP switches. Some allowance is made on the bottom of the PCB for large DC blocking caps. However, I use a jumper wire and would recommend that for most people as well. See spreadsheet for suggested parts. Corresponding PCB https://oshpark.com/shared_projects/T8Pg4Qkl
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