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Part="TL074"> Quad operational amplifier, DIP-14 | | | J3, J4, J5 | 3 | AudioJack2 | Audio Jack, 2 Poles (Mono / TS *(optional) SIP socket, 2.54 mm, 1x2 (see [build notes](build.md)) | | S3 | 1 | Conn_01x10 | Pin socket, 2.54 mm, 1x4 Pin header, 2.54 mm, 1x7 | | | | | | | S3 | 1 | B10k | Potentiometer.

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