optimize the Bluetooth range and stability as well as sound quality] Using classic TDA7498E chip, max output power can reach 160W + 160W, equipped with high-quality 32V/5A power supply enough to drive above 300W passive speakers. It has a good match with outdoor/ bookshelf/ computer/ desktop /ceiling /floor standing speakers.M1 PRO supports stereo RCA and Bluetooth 5.0 input, compatible with phones, computers, TVs, MP3 players, TV, Echo Dot, CD players etc. It is also a digital music player with U-disk input supporting MP3, WAV, APE, FLAC and WMA lossless formats.Can build 2.1-CH audio system with its low frequency output for active subwoofer. The bass effects can be strongly enhanced. The sound is more delicate with treble and bass control, the shocking auditory effects make you feel like in the cinema.Reasonable circuit layout and concise wiring to ensure HiFi clear and clean sound, no audible noise even at high power output. High gain Bluetooth antenna design, can receive audio signals from greater distance, very practical and powerful.Mini size with exquisite appearance, aluminum alloy case and gold-plated terminals are fashionable and durable, with input switch and indicator, very suitable for home and desktop audio system use.