R1 = 47K R2 = 100R R2 = 6.8K R4 = 68K R5 = 2.7K-1/2W R6 = 2.7K-1/2W R7 = 2.2K R8 = 39K C1 = 100uF-25V C2 = 100uF-25V C3 = 100uF-25V C4 = 47nF-63V C5 = 47nF-63V D1 = BZX79C18 D2 = BZX79C18 Q1 = BC337 Q2 = BC327 J1 = RCA Jack IC1 = LM833, Opamp