Sound quality is very good and it can drive 4/6/8 ohm speakers. Bluetooth V4.0， it has sufficient power output 2*50W.  <br> <br> <strong>Features:</strong> <br> Sound quality is very good by using this module. <br> Upgraded version， with microphone and with call function. <br> TPA3116 stereo audio power amplifier chip. <br> With 5 buttons for adjustment， convenient and easy operation. <br> Applicable speaker impedance: 4/6/8 ohm. <br> <br> <strong>Specifications:</strong> <br> Supply Voltage: DC 8-26V <br> Power Interface: 2.1 DC Socket <br> Supply Current: Recommended above 24V 3A Power Supply <br> Audio Input: Bluetooth Receiver V4.0 <br> Audio Output: Terminals <br> Applicable Speaker Impedance: 4/6/8 ohm <br> Number of Channels: Two-channel Stereo <br> PCB Board Size: 80 * 52 * 17mm / 3.15 * 2.05 * 0.67in <br> Weight: 52g / 1.84oz <br> <br> <strong>Package List:</strong> <br> 1 * Bluetooth 4.0 Audio Receiver Power Amplifier Board