AC110V 220V 12v 24v Digital Bluetooth Stereo Amplifier Board Subwoofer Dual Microphone Karaoke Amplifiers For support MP3 format Description: 1.Internal High-Quality Module: The internal module of this product is high-quality, allowing it to support various audio formats such as U disk TF card for music and FM stereo radio, as well as MP3 music format. It also supports a microphone interface output, making it a versatile audio device for listening to music and making hands-free phone calls. 2.Phone Connection and Control: The phone is connected to the product and controls the playing of music through the product's interface. This means that you can easily switch between songs, adjust the volume, and even select different sound effects using your phone. 3.Adjustable Audio: The product allows for adjustable high and low audio, giving you the flexibility to customize the sound to your preferences. You can select different sound modes, such as pre-professional level input operational amplifier IC for circuit design, sound, transparent, bright, filtering and anti-large-capacity power circuit, stable, low energy consumption, power saving, low heat generation, long service life, and function, FM/USB/TF read card / radio.