This Bluetooth digital power amplifier board delivers 2.1 channel fidelity sound with strong power handling for DIY audio and compact stereo setups. Key features and benefits power 2.1 channel design for clear stereo sound plus subwoofer performance Wide working voltage and clear limits for flexible DC power options Per channel power availability at 50 V: 300 W into 4 Ω or 160 W into 8 Ω Subwoofer capability up to 600 W into 2 Ω for deep bass response Built with the latest materials for reliable power Bluetooth amplification Suitable for Bluetooth audio streaming with a dedicated subwoofer channel Technical specifications Working voltage range: 18 to 50 V DC Voltage limit: 53 V Recommended DC supply: 36 to 48 V, 12 A Output by channel (left or right): 300 W @ 50 V into 4 Ω Output by channel (left or right): 160 W @ 50 V into 8 Ω Subwoofer maximum power: 600 W @ 50 V into 2 Ω Additional channel ratings: 300 W @ 50 V into 4 Ω; 160 W @ 50 V into 8 Ω Power relationship note: higher supply voltage and lower impedance yield greater output power What makes it stand out 2.1 channel configuration combines strong stereo performance with a dedicated subwoofer channel Uses modern materials to support power delivery and durable operation Flexible voltage handling enables integration with various DC power sources within the specified range Clear emphasis on compatibility with 4 Ω and 8 Ω loudspeakers and a subwoofer load Practical use scenarios Home theater or music system with Bluetooth streaming and a powered sub for rich, roomfilling sound Custom DIY loudspeaker builds or compact PA setups requiring strong stereo output plus subwoofer performance Vehicle, marine, or other DCpowered installations that can supply 3648 V within the recommended current, to achieve volume, fidelity sound Compatibility and performance notes Suitable for 4 Ω and 8 Ω loudspeakers Subwoofer support up to 2 Ω for maximum bass output Designed for reliable Bluetooth digital amplification with efficient power delivery