Features: 1. 5.1 Surround Sound, High-Power Amplifier, Bluetooth 5.0, Usb Flash Drive Card (Not Included), Dual Microphone Inputs 2. Wireless Bluetooth, Lossless Decoding, Dual Microphone Interface, Super Bass, Karaoke Reverb 3. 5.1 Surround Sound, Cinematic Immersive Experience 4. High-Power Amplifier, Dual Microphones For Karaoke, And Reverberation Adjustment 5. Lossless Decoding Mode, Listen To High-Definition Audio Description: 1. Amplifier type: HIFI 2. Output impedance: 4-16Ω 3. USB: support 4. Microphone: Support 5. FM radio: supported 6. Remote control: supported 7. Bass adjustment: support 8. Amplifier channel: 5.1 9. Rated power: 200W+200W 10. Bluetooth: support 11. SD card: support 12. Reverberation adjustment: support 13. FM frequency range: 87.5-108MHz 14. Treble adjustment: support 15. Harmonic distortion: Less than 1KHz 0.05% 4W 16. Treble control: 10KHz±12dB220mV 47K 17. Bass control: 100Hz±12dB 220mV 47K 18. Frequency response range: 20Hz-20KHz Plug Type:AU Plug,it applies to Australia and so on Voltage: AC220V Material: Aluminum alloy colour: black Package Contents: 1 Amplifier 1 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.