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Much \nbetter. Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14 Audio Jack, 2 Poles (Mono / TS) | | C7, C12 | 1 nF | Unpolarized capacitor | | R4, R12, R13 | 3 | A1M | \*\*Potentiometer, 9 mm or 16 mm 3.5 mm jack 3 mm LED 5 mm Small Signal NPN Transistor, TO-92"/>

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