2.0+ channels with a powerful output of 600W for left and right channels, plus a dedicated subwoofer signal output for enhanced performance. Utilizes Bluetooth QCC3034 and ES9023 for high-end audio quality, supporting lossless decoding for superior sound clarity. Includes a karaoke board expansion interface, allowing users to enjoy music and sing simultaneously for a complete entertainment experience. Features a subwoofer signal output interface, enabling easy pairing with a pure post amplifier board to create a desired 2.1 channel setup. Comes with the original TI operational amplifier NE5532 in both SOP and DIP8 packages, facilitating easy replacement of high-temperature operational amplifiers. This audio amplifier system is designed for audiophiles seeking high-quality sound and versatility. With its robust power output and advanced Bluetooth technology, it ensures an immersive listening experience. The karaoke feature adds a fun element for gatherings, while the subwoofer output allows for customizable settings. The operational amplifier design ensures and ease of maintenance, making it a reliable choice for any audio setup. Color: As Shown Material: plastic Package Contents: 1*Amplifier Board(External lead type) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.