Features: Enjoy high quality sound with the power amplifier board, designed for music enthusiasts and DIY projects. Made from durable metal materials, the power amplifier board ensures reliable performances and efficient heat dissipation, making it perfect for DIY passive speakers and home sounds system. Perfect for sound enthusiasts and those looking to upgraded their stereo setups, the power amplifier board delivers exceptional sound in various settings. Create a personalized sound experience in your living room or any space with the power amplifier board. Experience clear sound and powerful output for an immersive listenings experience. Take your sound setups to the next level with the amplifier board. Whether you are a music lover or a DIY enthusiasts, this versatile device provides outstanding sound quality and reliability. Specifications: Material:Metal Bluetooth-Compatible version: 5.1 Input method: Bluetooth-Compatible+AUX+U disk+USB sound card Output: Passive speaker + 3.5mm interfaces stereo output Volumes adjustment: high-end coding knob adjustment, smooth feel Output power: 50Wx2 Frequency range: 20Hz-30KHz Compatible speakers: 10W-200W/40-80 Signal-to-noise ratio: 92dB subwoofer Adaptable speakers: 20W-200W/20-80 Protections mechanism: electrostatic protections, overheating protections, overcurrent protections, short circuit protections Support APP Control Size:Approx.8.4cm/3.31''x6.5cm/2.56'' Package Includes: 1x Power Amplifier note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.