power Bluetooth digital power amplifier board, 2.1 channel, designed for fidelity sound Key specifications and features Working voltage range: 1850 V DC; voltage limit: 53 V Recommended DC power supply: 3648 V with 12 A current Built with the latest materials for a power Bluetooth digital power amplifier board 2.1 channel configuration delivering fidelity sound quality Power output by load Left or right channel: 300 W at 50 V into 4 ohm; 160 W at 50 V into 8 ohm Subwoofer (maximum power): 600 W at 50 V into 2 ohm; 300 W at 50 V into 4 ohm; 160 W at 50 V into 8 ohm Performance relationship Output power increases with higher supply voltage and lower impedance Higher voltage enables greater power delivery into the same load; lower loads yield higher wattage Design and compatibility highlights 2.1 channel Bluetooth digital amplifier board for integrated audio systems Suitable for driving left and right speakers and a dedicated subwoofer Compatible with 4 ohm and 8 ohm speaker loads, and 2 ohm subwoofer loads within the specified voltage range Practical use scenarios Custom portable or fixed Bluetooth speaker systems with an integrated subwoofer for concerts, events, or outdoor gatherings Automotive, marine, or offgrid audio installations that can provide a 3648 V DC power supply and require power amplification for multiple channels Prototyping, testing, or lab setups for Bluetooth audio equipment, where a stable 1850 V DC supply and significant headroom are desirable Notes Ensure the DC supply remains within 1850 V during operation; do not exceed 53 V Power ratings are specified at 50 V into the indicated ohm loads; realworld performance depends on the connected load and supply stability