The DAM H1 Amplifier Board with shell features Bluetooth, USB decoding, and dual microphone inputs + Karaoke Reverberation . It supports MP3, WAV, FLAC, and APE formats with a bit rate of under 1500kbps. It includes digital reverb, anti-howling, virtual bass, and a wide voltage range (8-36VDC). The board has flexible connectivity options for power, audio output, and mode selection. Assembly required, with no power supply or cables included.