Features [AUDIO INPUT] The amplifier board supports small memory card and Bluetooth audio input, the Bluetooth signal range is 0-15 meters (no occlusion). [DUAL CHANNEL] The power amplifier board is dual channel design, with a single 15W output power, ensuring stable and reliable performance. [FINE PROCESSING] Adopting SMD technology, the power amplifier module has the advantages of compact structure and convenient installation. [EXCELLENT CAPACITOR] Double row symmetrical capacitor, large enough capacity, enough quantity, more perfect filtering effect, improve power factor. [APPLICABLE SCENES] The power amplifier board can be used to transform the wireless speaker, suitable for home audio source, store solicitation, etc. Specification: Item Type: Power Amplifier Board Product Model: XH A233 Input Voltage: DC12-24V Audio Input: Support small memory card and Bluetooth Bluetooth Signal: Approx. 0-15 meter / 0-49.2ft (no occlusion) Channels: 2 Channels Output Power: 2 x 15W Play small memory card first Key Functions: Prev V -: Short press to the previous song, long press to decrease the volume Prev V+: Short press to the next song, long press to increase the volume Package List:1 x Power Amplifier Board Note:Please note that the installation should be standardized. Package List 1 x Power Amplifier Board