Image
PCBs for Stuart Yaniger's Equal Opportunity phono preamp / gain block
In his Volume 7 article Staurt presented a universal gain block, with a particular application to phono preamps. Because it uses JFETs, tubes, MOSFETs and IC regulators, it was baptised 'The Equal Opportunity gain block'.
I designed a PCB layout for the gain block with positions for RIAA corrction components, and the board files and relevant schematics are available here for anyone whoi want to buiild it, as long as it is not for a commercial purpose. If you want to commercialise it, please check with Stuart for license arrangements.