Loudness Control Otomatis

     P1 10K Linear Potentiometer (Dual-gang/stereo)
    R1,R6,R8 100K 1/4W Resistor
    R2 27K 1/4W Resistor
    R3,R5 1K 1/4W Resistor
    R4 1M 1/4W Resistor
    R7 20K 1/2W Trimmer Cermet
    C1 100nF 63V Kapasitor
    C2 47nF 63V Kapasitor
    C3 470nF 63V Kapasitor
    C4 15nF 63V Kapasitor
    C5,C9 1µF 63V Kapasitors
    C6,C8 47µF 63V Kapasitors
    C7 100pF 63V Kapacitor
    IC1 TL072 Dual BIFET Op-Amp
    SW1 DPDT Switch (4 pole)

source: circuit-finder