TDA7492P Bluetooth 4.0 Amplifier Board TDA7492 50W 50W Wireless Digital Audio Receiver Amplifier Module DIY Electronic Amplifier. 2 Channel Stereo Amplifier Board will let you enjoy wonderful quality stereo music and audio w/2x50W watts of power which can be used for multi speakers w/ 8 ohms impedance. Perfect for your for home or vehicle music streaming sound system. Model: AD-001, with better quality capacitor resistance, the sound is more stereo; Better performance heat dissipation; 4 mounting holes are made of gold-plated material, which is more beautiful. Equipped with Bluetooth wireless music streaming, the personal integrated digital audio receiver works w/ today’s phone devices with hassle-free receiver pairing. Note: The device is only for your phone, you couldn’t use it for computer. The professional compact mini speaker sound amplifier board features crisp and responsive buttons for power interface, previous, next, play/pause. volume+, volume-, there is a Bluetooth indicator, when you see the red and blue alternately flashes you can be paired. This amp with two high efficiency drivers easily can reach 110-120 db, deeper sound experience.