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Fritz_D_Cat's photos: BJr - PCB All Wired Up


Lotsa Billm, here. Note the push-pull pot. The switching changes which bright cap is in circuit, replacing C35. The presence control is a pot substituted for R26. It controls the frequency rolloff of the feedback loop. Upper right is Billm Clean boost module, which sorta works like the FAT switch but on a different tube, and is "voiced" a lot higher. Input jack is shielded.