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| A-1624 or A-2969 | | | | | | | C2, C5, C6, C8 | 4 | 100 nF | Unpolarized capacitor | | | | | | J2 | 1 | SW_3PDT_x3 | Switch, triple pole double throw Precision Timers, 555 compatible, PDIP-8 | | | J10 | 1 | TL071 | Operational amplifier, DIP-8 | | | | | Tayda | A-2939 | | | | Screws and spacers (see [build notes](build.md)) | | U1 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-14/SOIC-14"/>

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