This is a 2.1 active subwoofer speaker circuit board, and maximum stereo power is 15W+15W, and maximum bass channel is 30W. Wide voltage supply 12V-20V current 3A or more. Input power with fault-tolerant design,so that the operator has no worries connect with power Production enthusiasts can buy it and make a set of their own powerful active subwoofer system, or if you have a bad audio system, you can buy this board to replace it and make your audio resurrect. Output Power:15W*2(4Ω)+30W(4Ω)
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