Feature: 1. 30W POWER AMPLIFIER MODULE: power amplifier board is a small power device with an output power of 30W. It's sufficient for various applications, meeting daily needs effectively. Its compact design and convenient connectivity give it an advantage in lightweight and portable scenarios. 2. TRUE WIRELESS STEREO FUNCTION: amplifier module features true wireless stereo capability, enabling seamless wireless stereo connection. You can pair 2 amplifier modules to create a truly immersive sound experience. You can effortlessly achieve left and right stereo sound. (This function requires the purchase of 2 set power amplifier boards) 3. COMPATIBILITY: Support MP3, WMA and WAV, FLAC, APE lossless formats. Wide range of applications, suitable for 4-8 ohms, 5-30W speakers. Ideal for DY simple mono amplifiers. Power amplifier board uses 5.1, and its transmission distance can reach 32.8ft (without obstruction). Can change the name. 4. 3 INPUT METHODS: amplifier board features diverse sound input options, including convenient connectivity, the traditional AUX sound interface, and USB playback capability, catering to a wide range of user needs. 5. WIDE APPLICATION: For those who love DIY or compatible speakers, this module is the ideal choice for creating personalized speakers. You can design unique sound devices based on your preferences and needs. Specification: Item Type: Mono Amplifier Board Material: PCB Version: 5.1 (10m / 32.8ft without Obstruction) Transmission Distance: 15m / 49.2ft Input: , AUX, USB Channel Number: Mono 30W Power Supply: DC9-24V, 3A (Not Compatible with AC Power) Compatible Speaker: 4-8Ω, 5-30W Supports: for Wuzhi APP Package List: 1 x Mono Amplifier Board 1 x Top Cover Board 1 x Bottom Cover Board 1 x Knob Cover 1 x DC Connector 1 x Screwdriver 4 x M2x14 Brass Standoff 8 x M2x3 Screws 4 x M2x3+3 Brass Standoff 1 x User Manual