24</td><td>3</td><td>1k</td><td>Device:R</td><td>~</td><td>Resistor</td><td></td></tr><tr><td>R21</td><td>1</td><td>820</td><td>Device:R</td><td>~</td><td>Resistor</td><td></td></tr><tr><td>R22</td><td>1</td><td>1k2</td><td>Device:R</td><td>~</td><td>Resistor</td><td></td></tr><tr><td>R25</td><td>1</td><td>7k5 1%</td><td>Device:R</td><td>~</td><td>Resistor</td><td></td></tr><tr><td>RV1, RV2, RV3, RV4</td><td>4</td><td>B100k</td><td>Device:R_POT</td><td>~</td><td>Potentiometer</td><td></td></tr><tr><td>U1, U