953.402UK User ManualFront panelRear panel1. Power on/off switch 12. Channel 1 output level control2. SD card slot 13. Channel 2 output level control3. Media player display 14. USB port4. 3.5mm stereo Aux input 15. Media player control panel5. Aux input volume control 16. Mic 1 input 6.3mm jack6. Media player volume control 17. Mic 2 input 6.3mm jack7. Line 1 input volume control 18. Mic 1 volume control8. Line 2 input volume control 19. Mic 2 volume control9. Stereo input selector 20. Talkover on/off button10. Bass EQ control 21. Output Signal & Clip indicators11. Treble EQ control22. Ventilation grille (do not obstruct airflow) 27. Line output23. FM antenna connection (F type) 28. Channel 1 speaker output +/- 4mm binding posts24. Line 2 input (L+R RCA) 29. Channel 2 speaker output +/- 4mm binding posts25. Line 1 input (L+R 6.3mm jack) 30. IEC mains inlet & fuse holder26. Line 1 input (L+R RCA)