HiVi AT-80A Home Theater, Constant Voltage And Impedance Amplifier, Public Address Ceiling Speaker Amplifier, Suspended Ceiling Background Music Public Address Amplifier Sound System

1. Power Switch

2. USB Socket

3. AUX1/AUX2/USB/BT Playback Mode Switch

4. Pause/Play

5. Previous Track

6. Next Track

7. BT/USB Volume Control

8. MIC Volume Control

9. AUX1/AUX2 Volume Control

10. Treble Adjustment

11. Bass Adjustment

12. Remote Control Receiver Window

13. Display Screen

1. MIC Input

2. Microphone Gain

3. AUX1/AUX2 Line Input

4. Constant Voltage/Constant Resistance Audio Output (COM+100V/70V/4~16Ω, cannot be connected simultaneously)

5. Power Cord