All Resistors are 1/4-watt
R1, R2, R3, R4, R5: 1K, Digi Key CF14JT1K00CT-ND - Cut Tape(CT)
R6, R7, R8, R9, R10: 10K, Digi Key CF14JT10K0CT-ND - Cut Tape(CT)
R11: 5K single-turn linear taper potentiometer, Digi Key 987-1311-ND or Amazon ASIN # B0744G6JDN
R12: 10K single-turn linear taper potentiometer, Digi Key 987-1724-ND or Amazon ASIN #B00DN7P2QE
C1, C2, C3, C4,