_x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Instructions _x000D_ _x000D_ _x000D_ _x000D_ Support USB sound card, free drive, plug and play (normal lithium battery power supply situation). _x000D_ _x000D_ _x000D_ This product has dual 5W power amplifier circuit. It can not be used in addition to the power amplifier. The output of two amplifiers can not be connected in parallel or connected to the negative electrode, otherwise the power amplifier chip will be damaged. _x000D_ _x000D_ _x000D_ There are two 2-8 ohm and 3-10W speakers respectively, and 4 ohm 5W as well as 4 ohm 10W horn are used. The output is stereo. _x000D_ _x000D_ _x000D_ Maximum working current is 5V 2A, using 5V 2A or more voltage power supply, sound quality will be better. _x000D_ _x000D_ _x000D_ It is suggested that a 3.7-5V lithium battery (the lithium battery needs a protective plate! It can charge a lithium battery with a USB rechargeable battery, and the USB port can not be used as a power supply port.) or a 5V adapter be used for power supply. It can not use voltage and current unstable power supply, such as dry battery, portable charger, multi-function transformer and so on. _x000D_ _x000D_ _x000D_ When the Bluetooth board is installed, the antenna should not be close to the metal parts so as not to affect the transmission distance. _x000D_ _x000D_ _x000D_ _x000D_ Features : _x000D_ The product is a stereo Bluetooth amplifier module. _x000D_ The Bluetooth version is 4.2. It can be compatible with all mobile phones and Bluetooth adapters on the market. _x000D_ The distance is 15 meters in open space. _x000D_ It supports automatically connecting devices that have been paired and playing music automatically. _x000D_ F class power amplifier 5W+5W, high power output, over 8002 sound quality. _x000D_ It supports USB sound card, no drive, plug and play. _x000D_ Good sound quality, suitable for upgrading and refitting the idle sound box and DIY production. _x000D_ _x000D_ Operation : _x000D_ Start the cell phone Bluetooth, scan the device, find the "DW-CT14+" to click connection. _x000D_ _x000D_ Note : _x000D_ The charging interface of this product is a current limiting charging mode without charge management. For your safety, be sure to use a regular lithium-ion battery with a protective plate, which can cause loss due to improper use. _x000D_ _x000D_ Packing list _x000D_ _x000D_ 1*Main board _x000D_ 1* Plug line _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_