Notice: – If it is used in a car (12V voltage), please use the car cigarette lighter power supply. Connecting to the car battery will cause noise. – If it is used in a truck (24V voltage), you need to use a step-down device to reduce the voltage to 12V before it can be used. Otherwise, the power amplifier will be burned out. – If it is for household use, please use a 12V 2A power adapter. Specifications: Product Name: Power Amplifier Model: XY-KA15H Color: Blue Channel: 2.0 CH bluetooth: Support Input Voltage: DC 8-24V RMS Power: 20W 20W Max. Output Power: 200W 200W Transmission Distance: 15m (Unobstructed) Input Method: bluetooth AUX U Disk USB Sound Card Protection Mechanism: Power Supply Reverse Connection Protection, Short Circuit Protection, Self-recovery Overheating Protection. Size: 7.7*6.2*2.2cm/3.0×2.4×0.9in Package Included: 1 x Power Amplifier ( Not Included Power Adapter ) Notes: – If you want to use it as a household amplifier, you need to buy a to 12V switching power adapter. – Please allow 1-3cm difference due to manual measurement. – Due to light and screen difference, the item’s color may be slightly different from the pictures. Related Products:car stereo amplifier,mini car amplifier,bluetooth amplifier,bluetooth amplifier for speakers,stereo amplifier,speaker amplifier,sound amplifier,home amplifier – Mini HIFI digital bluetooth audio power amplifier. – Suitable for U disk, AUX input, MP3 format play, support bluetooth wireless connection. – Two main channel output, left and right channel outputs are interfaces for speakers. – The machine supports bluetooth operation, and supports line input.