All resistors 1/4 watt. Part Value C1 .0068uf ceramic disk C6 1uf /15 v C7 1uf /15 v C8 1uf /15 v C9 1uf /15 v C10 1uf /15 v C11 1uf /15 v C12 1uf /15 v C13 1uf /15 v C14 1uf /15 v C15 1uf /15 v C16 1uf /15 v C17 1uf /15 v IC1 CD4066 IC2 CD4066 IC3 CD4066 Q1 2N3904 or 2N2222 Q2 2N3904 or 2N2222 Q3 2N3904 or 2N2222 R1 33K R2 470K R3 10K R4 100K R5 33K R6 10K R7 33K R8 33K R9 10K R10 10K R11 100K R12 33K R13 470K R14 100K trimpot R15 33K R16 500K trimpot R17 100K trimpot R18 2K trimpot R19 500K trimpot R20 4.7k R23 4.7K U1 LM358N Dual Op Amp U2 LM358N Dual Op Amp U3 LM358N Dual Op Amp J1 DB15 right angle PC mount male