Operating voltage range: DC 12-24V(maximum voltage is no more than 24V); built-in TPA3116 amplifier chip;This is a pre-amplifier, bass frequency processing, with bass volume potentiometer control of the bass amplifier board.
DC 12-24V power supply, wide operating voltage, power-saving design, more than 90% power efficiency. Maximum support 100W (Bass) bass channel output
You can use a good switching power supply adapter, laptop switching power supply, or rectified filter transformer power supply, you can also use rechargeable batteries, or vehicle power supply and so on.
TPA3116 DC 12-24v 100W Subwoofer Amplifier Board Support Bass Output ,Video Audio Accessories 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 Working voltage range: Dc 9 to 25 v (current 2 -3A above, if you want to power Big,advice 19-24v 4A above). Frequency response range: input: 20 hz - 20 KHZ, output: 20 hz - 180 hz Audio input sensitivity: 500 mv. Speaker impedance: bass speaker impedance: 2-8 ohm Bass output power: 12V/10w(8ohm)/ >19w(4ohm)/>22 w( 3ohm m) />30w(2ohm) 15V/>15w(8ohm)/>29w(4ohm)/>39w(3ohm)/>50w(2ohm) 19V/>24w(8ohm)/>48w(4ohm)/>60w(3ohm)/>75w(2ohm) 24V/>38w(8ohm)/>75w(4ohm)/>95w(2-3ohm) Packaging included 1pcs* Subwoofer Amplifier Board