2.1channel fidelity Bluetooth digital power amplifier board Key benefits Flexible power for various speaker configurations: left or right channel delivers 300W at 50V into 4 ohms, or 160W at 50V into 8 ohms; maximum subwoofer power reaches 600W at 50V into 2 ohms, with 300W into 4 ohms and 160W into 8 ohms. This enables strong performance across standard loudspeakers and subwoofers. Higher voltage, lower impedance yields greater output: the design follows the principle that increasing supply voltage while lowering load impedance increases output power, allowing you to tailor performance to your system needs. Wide operating voltage with safe limit: the working voltage range is 18 to 50 V DC, with a limit at 53 V, providing flexibility for diverse installations. Practical power supply guidance: recommended DC power supply is 36 to 48 V and 12 A, facilitating reliable operation in typical DIY, install, or small venue setups. Modern construction for strong audio: built with the latest materials to deliver a power Bluetooth digital amplifier with 2.1channel, fidelity sound quality, suitable for demanding listening and integration with wireless sources. Specifications at a glance Left or right channel power: 300W @ 50V into 4Ω; 160W @ 50V into 8Ω Subwoofer (maximum) power: 600W @ 50V into 2Ω; 300W @ 50V into 4Ω; 160W @ 50V into 8Ω Relationship note: the higher the supply voltage and the lower the impedance, the greater the output power Working voltage range: 18–50 V DC Voltage limit: 53 V Recommended power supply: 36–48 V, 12 A Construction: uses latest materials for power Bluetooth digital amplification; 2.1channel, fidelity sound quality Applications and use scenarios Home audio with Bluetooth streaming: connect wirelessly to a receiver or source device and drive left and right channels plus a subwoofer for immersive sound in a living room or media room. DIY audio projects and custom installations: suitable for hobbyists and installers building output speaker systems, small venues, kiosks, or retail displays that require strong amplification and wireless input. Compact PA or venue setup: suitable for small performance spaces, background music systems, or event setups where Bluetooth input and robust power handling are beneficial. Compatibility and performance notes Designed as a boardlevel power amplifier with Bluetooth input, optimized for 2.1channel configuration and subwoofer support. Emphasizes clear, faithful sound with substantial headroom across multiple impedance options, enabling flexible system design without sacrificing audio quality.