Quad operational amplifier, DIP-14 | | | | | | | Q1, Q2, Q3 | 3 | A1M | Potentiometer | | | | | | | S2 | 1 | Synth_power_2x5 | 2x5 pin shrouded header 2.54 mm spacing D Switch, single pole double throw D Switch, single pole double throw K switch normally-open pushbutton push-button Side push button (https://www.alps.com/prod/info/E/PDF/Tact/SurfaceMount/SKRT/SKRT.pdf push horizontal SPST 1P1T CK components KMR2 tactile switch SPST LED OFF-ON D Single Pole Single Throw (SPST) switch, small symbol D 4x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol D 9x DIP Switch, Single Pole Single Throw (SPST) switch, small.