Model: -1002T Bluetooth-compatible Version: 5.0(no occlusion, 10m) : 90dB Input mode: AUX+ Bluetooth-compatible Number of channels: left and right double channels (stereo) Power amplifier chip: TPA3116D2(with AM interference suppression function) Adaptive power supply: DC12-24V/5A or above (the higher the voltage, the higher the output power) Adapter horn: 20-200W, 4-8 Output power: 20W*2 12V, 8 ohms; 35W*2 12V, 4ohm 35W*2 19V, 8 ohms; 60W*2 19V, 4ohm 50W*2 24V, 8 ohms; 100W*2 times 24V, 4ohm Protection mechanism: overvoltage, undervoltage, overheat, DC detection, short circuit protection Colour:black Material:plastic Tip: Only when the audio input is enough and the power supply voltage/current is enough there be enough output power!! The higher the power supply voltage, the greater the output power, the smaller the horn impedance, the greater the output power!! Please that the adapter power is the actual working power of the amplifier!! Package Contents: 1 * Subwoofer Amplifier Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.