Feature:1. [AUDIO INPUT] The amplifier board supports small memory card and Bluetooth audio input, the Bluetooth signal range is 0-15 meters (no occlusion).2. [DUAL CHANNEL] The power amplifier board is dual channel design, with a single 15W output power, ensuring stable and reliable performance.3. [FINE PROCESSING] Adopting SMD technology, the power amplifier module has the advantages of compact structure and convenient installation.4. [EXCELLENT CAPACITOR] Double row symmetrical capacitor, large enough capacity, enough quantity, more perfect filtering effect, improve power factor.5. [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 BoardProduct Model: XH A233Input Voltage: DC12-24VAudio Input: Support small memory card and BluetoothBluetooth Signal: Approx. 0-15 meter / 0-49.2ft (no occlusion)Channels: 2 ChannelsOutput Power: 2 x 15WPlay small memory card firstKey Functions: Prev V -: Short press to the previous song, long press to decrease the volumePrev V+: Short press to the next song, long press to increase the volume.Package List:1 x Power Amplifier BoardNote:Please note that the installation should be standardized.