["brand new and high quality\nFeatures:\nBluetooth-compatible must be connected to be in Bluetooth-compatible mode, otherwise it is AUX.\nMade of high quality materials, featuring high performance and high performance price, especially for HIFI music power amplifier with high power and for high fidelity.\n5.0 Bluetooth-compatible version has higher transmission efficiency, and longer transmission distance.\nTPA3116D2 is a D type amplifier IC, which has very high frequency of up to 1.2MHZ, and the output distortion is less than 0.1%.\nThe red and gray ring inductors are specially designed for digital power amplifiers, while the 684 film capacitor is a special capacitor for audio amplifier, so both of them are features low loss, high bandwidth and for high fidelity.\nWith AUX and Bluetooth-compatible two audio source input mode, two in one.\nWith a switch, potentiometer can be used to adjust the volume, easy to control the volume, very suitable for DIY speakers.\nCopper for DC female for head, fence terminal, withstand large current, no heat, no damage to the line, good wiring, not easy to short circuit.\n\nSpecification:\nMaterial: Fiber glass board + Electronic component\nSize: app.84 x 54 x 24mm/3.31 x 2.13 x 0.94in\nColor: As picture shown\nQuantity: 1 Pc\n\nParameter:\nModel: ZK-1002\nBluetooth-compatible Version: 5.0\nChip Solution: TPA3116D2 (With AM interference suppression)\nWith or Without Filter: Yes (Filtered sound is more round and clear)\nAdaption Supply Voltage: 5-27V (Optional 9V/12V/11/18V/24V adapter, high power recommended high voltage)\nAdapter Speaker: 50W-300W, 4Ω-8Ω\nNumber of Channels: Left and right stereo (Stereo)\nBluetooth-compatible Transmission Distance: 15m(Without occlusion)\nfor Protection Mechanism: Overvoltage, Undervoltage, Overheating, for DC detection, Short Circuit for protection\n\nTip: To have enough output power if the audio input is sufficient and the supply voltage/current is sufficient. The power supply voltage is higher and the relative power will be larger. The speakers with different impedances will have different output power. In the for case of sufficient voltage and current, the larger the ohms of the horn the smaller the relative sound power. Please pay attention!\nPower Supply Voltage: 12V-8hom speaker/24W (Left channel) + 24W (Right channel), 4 ohm speaker/40W + 40W\n 15V-8homs /36W + 36W, 4 ohm/greater than 60W + 60W\n 19V-8homs /64W + 64W, 4 ohm/greater than 90W + 90W\n 24V-8homs /76W + 76W, 4 ohm/greater than 110W + 110W\n \nNote:\nNo retail package.\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 x Bluetooth-compatible Amplifier Board"]