Pre-amplifier Using OC75 Transistors
This pre-amplifier circuit design is compatible for use with ceramic, crystal, and magnetic turntable pickup cartridges. It uses OC75 transistors, which are still sometimes available online at auction sites.
This pre-amplifier circuit design is compatible for use with ceramic, crystal, and magnetic turntable pickup cartridges. It uses OC75 transistors, which are still sometimes available online at auction sites.