<br> TPA3116 DC 12-24v 100W Subwoofer Amplifier Board Support Bass Output ,Video Audio Accessories<br> Power supply: DC 12-24V Output power: 100W Use 12 to 24 v power supply,DC power supply wide working voltage, power saving type design, efficiency is as high as above 90 percent.The biggest can support 100 w Bass sound channel output<br> Working voltage range:<br> Dc 9 to 25 v (current 2 -3A above, if you want to power Big,advice 19-24v 4A above).<br> Frequency response range: input: 20 hz - 20 KHZ, output: 20 hz - 180 hz<br> Audio input sensitivity: 500 mv.<br> Speaker impedance: bass speaker impedance: 2-8 ohm<br> Bass output power: <br> 12V/10w(8ohm)/ >19w(4ohm)/>22 w( 3ohm m) />30w(2ohm)<br> 15V/>15w(8ohm)/>29w(4ohm)/>39w(3ohm)/>50w(2ohm)<br> 19V/>24w(8ohm)/>48w(4ohm)/>60w(3ohm)/>75w(2ohm)<br> 24V/>38w(8ohm)/>75w(4ohm)/>95w(2-3ohm)<br> Packaging included<br> 1pcs* Subwoofer Amplifier Board