【Genuine TPA3116 Chip】Equipped with an authentic TPA3116 mono amplifier chip, this board delivers up to 100W of output power and supports a wide 9–24V input voltage—ideal for DIY audio and high-power speaker projects. 【TWS True Wireless Stereo Pairing】Supports one-click TWS pairing to wirelessly sync two amplifier boards for immersive left/right channel stereo sound—perfect for building your own wireless speaker system 【Built-in Intelligent Boost Circuit】Built-In Boost Circuit for Optimal Voltage Output Features an auto-boosting circuit that intelligently adjusts input voltage (9V/15V) to a stable 19V or 24V (default: 24V), ensuring consistent high-performance audio even ith lower-voltage batteries. 【3-Knob EQ Control + Multifunction Button】Fine-tune your sound with independent knobs for volume, bass, and treble. The volume knob also acts as a smart control button: Play/Pause, Skip Track, TWS Toggle, and Power On/Off—all with intuitive presses 【Triple Input Modes: Bluetooth/USB/AUX】Offers flexible connectivity options including Bluetooth 5.3 for wireless streaming, USB for direct playback, and 3.5mm AUX for wired connections—compatible with phones, computers, MP3 players, and more