["brand new and high quality\r\nFeatures:\r\nStereo audio, it is wide frequency response, high efficiency, low distortion and low noise, the sound effect is good.\r\nDesigned with a volume potentiometer, you can easily turn the voice high and down. \r\nWith power supply reverse connection for protection，short-circuit for protection and over-heat for protection.\r\nWide supply voltage and two audio input modes, more efficient.\r\nRemote control makes it more easy to use, very convenient.\r\n\r\nSpecification:\r\nMaterial: PCB circuit boards\r\nSize: app.55 x 38 x 18cm/21.65 x 14.96 x 7.09in\r\nColor: As picture shown\r\nQuantity: 1 Pc\r\n\r\nProduct parameters:\r\nProduct Model: XY-P40W\r\nSupply voltage: DC: 8~24V\r\nBluetooth-compatible version 5.0\r\nConnect distance: 15 meters(visible)\r\nOutput mode: Stereo\r\nOutput power: 20W x 2 @12V 4Ω\r\n 30W x 2 @16V 4Ω\r\n 30W x 2 @21V 8Ω\r\n 40W x 2 @24V 8Ω\r\nSpeaker selected(40W~200W): 4Ω(5-16V supply)\r\n 8Ω(5-24V supply)\r\n\r\nOperating instruction:\r\n1. After connecting the power supply, the blue LED is on, and it goes into Bluetooth-compatible mode, waiting for pairing after playing the Beep;\r\n2. Turn on phone Bluetooth,\"XY-P40W\"will be searched and display; Click the \"XY-P40W\",it will connect to the board. It connects successfully with a Beep;\r\n3. After this you can for play the music. The amplifier board will prepare for the next pairing with a Beep.\r\n\r\nCaution:\r\n1. Keep a safe distance away from router to avoid WIFI interference\r\n2. 5-24VDC is recommended; upper than 26V, it will be damaged.\r\n3. Driving 4Ω load, power supply must be under 16V; and driving 8Ω load, supply must be under 24V.\r\n4. The supply current must be 2A at least.\r\n5. The line connecting speaker with module should be within one meter.\r\n6. ESD for protection, please release ESD on your hands before you contact the module.\r\n7. 40W and upper power speakers is recommended.\r\n\r\nNote: \r\nNo retail package.\r\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\n1 x Bluetooth-compatible Amplifier Board\r\n1 x Remote Control\r\n1 x User Manuel"]