This amplifier circuit based on IC STK ic used in which the manifold. And on this circuit ic STK has many similarities, you can use the STK430 ICs, 433, 435, 437, 439, 441, 443, 4332, 4352, 4362, 4372, 4392. Between the specify type IC STK, which has the excellent performance is STK433 and STK443 because it has output, and high amperage, and voltage problems Suplly but I chose IC STK443 because maximum voltage up to 70 volts, compared with the others that just under 60 volts. For a list of components can seen below. Component List : Resistor R1_____1KΩ R2_____1KΩ R3_____120Ω R4_____120Ω R5_____330KΩ R6_____22KΩ R7_____22KΩ R8_____330KΩ R9_____12KΩ R10____220KΩ R11____220KΩ R12____12KΩ R13____100Ω R14____4Ω7 R15____4Ω7 Capacitor C1_____4µ7F C2_____4µ7F C3_____220µF C4_____220µF C5_____100µF C6_____100µF C7_____220µF C8_____100µF C9_____47µF C10____47µF C11____0.1µF C12____0.1µF C13____2200µF C14____2000µF **Orange on symbol capacitor is plus Elco** IC U1_____STK430 , STK433 , STK435 ,...