ProCo RAT ハンドメイド。Proco Rat diy project Classic 1986 rat schematic with added。Proco Rat diy project Classic 1986 rat schematic with added。Pro Co Limited Edition Reissue '85 Whiteface RAT | Sweetwater。オペアンプにNational Semiconductor製LM308使用ハンドメイドエフェクターにご理解頂ける方