power Bluetooth digital power amplifier board for 2.1channel audio delivering fidelity sound. Built with the latest materials to support strong, reliable performance in Bluetooth enabled setups. Key benefits 2.1channel configuration provides stereo channels plus dedicated subwoofer output for clear, roomfilling sound. power capability suitable for demanding speakers and subwoofers, enabling impactful playback without distortion. Wide operating voltage range supports flexible installations with available DC power supplies. Designed for durability and reliability through use of advanced materials. Clear guidance on load and voltage relationships helps you select compatible speakers and power sources. What it is A Bluetooth enabled digital power amplifier board engineered for 2.1channel audio with fidelity sound. Uses the latest materials to optimize power handling and longterm reliability. Electrical and performance details Working voltage range: 1850 V DC Absolute voltage limit: 53 V Recommended DC power supply: 3648 V with 12 A or more Left or right channel output: 300 W at 50 V into 4 Ω; 160 W at 50 V into 8 Ω Subwoofer output (maximum): 600 W at 50 V into 2 Ω; 300 W at 50 V into 4 Ω; 160 W at 50 V into 8 Ω Power relationship: Higher voltage and lower impedance yield higher output power Compatibility and configuration Supports 4 Ω and 8 Ω loads for each channel and subwoofer 2.1channel configuration suited for Bluetooth streaming and amplified bass response Designed for installations where a stable DC supply in the 1850 V range is available Use scenarios Home theater or fidelity stereo system with integrated Bluetooth streaming and a dedicated subwoofer DIY or professional audio installations in environments with access to 3648 V DC power, such as solarpowered setups or industrial equipment racks Kiosks, exhibitions, retail displays, or small venues requiring strong Bluetooth audio with clear speech and impactful bass Notes on performance The units are designed so that increasing supply voltage and using lower impedance loads increases output power, enabling tailored loudness and dynamics for your specific speakers and room size