Product Features: 1. Using high quality materials, quality is guaranteed 2.DC DC socket, can use 12V-24V battery DC energized 3.220V household power socket, directly plugged in and energized to listen to music as you wish 4. Support independent adjustment of treble, bass and master volume. 5. Dual microphone input, adjustable reverb; built-in Bluetooth wireless receiver and FM radio Parameters: Parameters: 100-500W peak Power supply: support 12V-24V/and 220V for home use Impedance: 4-8 ohms Note: Do not connect the small speaker! this product is high power! Frequently Asked Questions: 1. How much product power? A: Product power minimum output 100W, peak 500W, for reference only! 2. Products support home electricity? Can you charge? A: The product supports domestic electricity, can not be charged, support for power supply 12-24V voltage and 220V household voltage, 24V car due to boost more than 24V need to install a voltage regulator in order to use! 3. Products can be connected to the wireless microphone board? A: The product can be connected to the 5V wireless microphone board, can also be plugged into two 6.5MM coil microphone! 4. Product support how many magnetic speakers and sound? A: The product supports 8-18 inch 120 magnetic-190 magnetic speakers/audio using 100-500W speakers best choice 4 ohms! 8 ohms also support, 8 ohms sound a little smaller! Package list: Bluetooth amplifier board *1 Power cord *1 Remote control *1