Reworking of the Wyn Palmer Phono Preamp

In this version of the Wyn Pre amp I wanted to have the Ability to connect either moving coil or moving magnet to the same input RCA jack and then have it sent by pressing a front panel button to either the moving coil section or the moving magnet section. The only caveat with this set up is you have to remember which cartridge, either moving coil or moving magnet , is connected to the RCA input you are using . Even though you may accidentally have the wrong section of the phono stage playing nothing bad happens, just a muted sound and pressing the moving coil/moving magnet button easily send the signal to its proper phono stage and restores normal sound .