Features: 1. XH-M577 Digital Amplifier Board 2. TPA3116D2 Audio Amplifier Board 3. High Power 4. Tone Board Op Amp 12-24V 5. Number Of Channels: Two Channels Description: 1. Product Name: Audio Amplifier Board 2. Input Voltage: DC12~24V 3. Input Current: Greater than5A 4. Magnification: 45 Times 5. Input Impedance: 1k 6. Output Impedance: 4-8 7. Output Power: 80Wx2 8. Number Of Channels: Two Channels Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Size: About 96 x 33mm Material: PCB+Plastic colour: As Shown Package Contents: 1 x Digital Amplifier Board 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.