ITEM NAME:CT14 Micro-4.2 Stereo Power Amplifier Board Bluetooth Module 5V 2A 5W + 5W Descriptio n Description: USB sound card support, free to disk, plug and play (normal lithium battery power supply). Has dual 5 W circuit power amplifier. 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 chip power amplifier will be damaged. F power amplifier class 5W + 5W, high output power, more than 8002 the sound quality. There are two 2-8 European and 3-10 W speakers respectively, and 3 European 5 W and 4 European 10 W horn are used. the output is stereo. Supports the connection of devices that have been paired and play music automatically. Start the Bluetooth cell phone, the scanning device, find the "DW-CT14 +" click connection. Fine workmanship and good performance. Easy to use. Durable in use. Specifications: Color: As Shown In Picture Size: Approx. 40*20mm Bluetooth Version: 4.2 Maximum Working Current: 5V 2A Package Included: 1 *Â CT14 Bluetooth 2.0 Stereo Power Amplifier Board With Cable Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! CT14 Micro-4.2 Stereo Power Amplifier Board Bluetooth Module 5V 2A 5W + 5W.1 CT14 Bluetooth 2.0 Stereo Power Amplifier Board With Cable. F power amplifier class 5W + 5W, high output power, more than 8002 the sound quality. Has dual 5 W circuit power amplifier. it can not be used in addition to the power amplifier.