Item Type: Digital Power Amplifier Board <br>Material: PCB <br>Audios Input Sensitivity: 600-800mV <br>Frequency Response Range: 20Hz-20KHz <br>Speaker Impedance: Left Right Channels: 4-8 ohms <br>Bass Channel: 2-8 ohms <br>1、Basic Specifications: DC single power supply 12?24V power supply, using TPA3116D2 high performance digital power amplifier chip as core, one for parallel bridge bass channel power amplification output, one for left and right channel power amplification output <br>2、3 Channel Output: This digital power amplifier board can support 100W (bass channel) + 50W (left channel) + 50W (right channel) 3 channel output <br>3、Support Functions: Support Bluetooth audios reception, external audios input interface, with pre amplification, bass crossover processing, bass volume, bass frequency, left and right channel volume, treble, function control switch, total volume, 5 adjustment potentiometers <br>4、High Efficiency: High power digital power amplifier board has wide operating voltage, power saving design, and the efficiency is as high as 90% or more <br>5、Good Performance: Good performance switching power supply, notebook computer switching power supply, charging bottle or car power supply, etc. can be used<p>1 x Digital Power Amplifier Board</p><p>1 x Terminal Wire</p><p>5 x Knob</p><p>8 x Screw</p><p>5 x Washer</p><p>5 x Nut</p>