Finally finished my ultimate boost pedal! Three circuits in one - the Catalinbread Naga Viper, EHX LPB-1, and the Zvex SHO (Landgraff Mod). Details in comments. : r/diypedals
Electro Harmonix LPB-1 – Thomann UK
EHX Electro Harmonix LPB-1 Linear Power Booster Pre Amp Guitar Effects – Life Guitars Co.