Item Type: Digital Power Amplifier Board <br>Material: PCB <br>Power Amplifier Plate Size: Approx. 105x43x28mm / 4.13x1.69x1.10in <br>Supply Voltage: Dual DC Power Supply ± 45 - ± 70V (Recommended +-65V Power Supply Can Be) <br>Rated Output Power: 500W (±65V Power Supply 4 Ohm Load, Distortion 1%) <br>Efficiency: >= 90% <br>SNR: 90db <br>Total Harmonic Distortion: <br>380W (±70 Powered 4 Ohm Speaker, Distortion <0.1%) <br>280W (±70 Powered 8 Ohm Speaker, Distortion <0.1%) <br>Frequency Response Range: 20Hz-20KHz <br>Horn: 4-8Ω <br>Voltage Amplification: 50 Times <br>Input Sensitivity 1V (RMS) <br>Output DC Bias Protection I.E. Horn Protection: Yes1、Professional Manufacturing: It is a 500W class D sound amplifier, mainly used in home theater and with speakers. <br>2、Circuit Optimization: Single channel class d sound amplifier board adopts circuit optimization and adds speaker relay protection. <br>3、Unique Design: Digital amplifier board: can turn on the delay, turn off the instantaneous break, effectively solve the switch on and off the shock sound. <br>4、Relay Power Supply: Digital stereo power amp module with its own relay power supply, external 110V 220V AC can be. <br>5、Premium Material: Single channel class d sound amplifier board using PCB material, high density, safe and reliable, aging resistance.Please allow some error in manual measurement.1 x <br> <br>Digital&nbsp;Power&nbsp;Amplifier&nbsp;Board&nbsp;&nbsp;<br>