Features [DOUBLE CHANNEL] The power amplifier board is dual-channel design, with a single 15W output power, ensuring stable and reliable performance. [EXCELLENT CAPACITOR] Double row symmetrical capacitor, sufficient capacity, sufficient quantity, more perfect filtering effect, improve the power factor. [APPLICABLE SCENES] The power amplifier board can be used to transform the wireless speaker, suitable for home audio source, store solicitation, etc. [AUDIO INPUT] Amplifier card supports small memory card and Bluet ooth audio input, Bluet ooth signal range is 0-15 meters (no occlusion). [FINE PROCESSING] Adopting SMD technology, the power amplifier module has the advantages of compact structure and convenient installation. Specification: Item Type: Power Amplifier Board Product Model: XH A233 Input voltage: DC12-24V Audio Input: Supports small memory cards and Bluetooth Bluetooth signal: approx. 0-15 meters/0-49.2 feet (no occlusion) Channels: 2 channels Output power: 2x15W Play first with a small memory card Key functions: Prev V -: short press the previous song, long press to decrease the volume Prev V+: Short press next song, long press to increase volume Package list: 1 x Power Amplifier Board Note: Please note that the installation must be standardized. Package List 1 x Power Amplifier Board