Bluetooth 5.0 mono high power 8 ohm subwoofer with tweeter remote control U disk audio input power amplifier board Product name: Bluetooth 5.0 subwoofer power amplifier board Output power: 30W /8 ohm load Channel: Mono Power supply: DC12-24V 3A Power amplifier board power and power supply description: 1. The power supply of this power amplifier board requires 12-24V 3A DC regulated switching power supply 2. DC12V 3A (above) power supply, the maximum output power is 20W8 ohms. 20W bass + 5W treble can be connected (full volume may be distorted after turning on) 3. DC24V 3A power supply, the output power can reach up to 30W 8 ohm continuous power! 30W bass + 10W tweeter can be connected (4 ohm speakers may be protected) (full volume may also be protected after turning on) 4. It can be connected to a battery for power supply (not a 24V battery, because the battery may exceed 25V after being fully , and the capacitor on the board is 25V, there is a risk of explosion!) 5. Do not connect the 24V battery of a large truck, because the charging voltage reaches 28-32V when the truck is on fire, and it will burn! Colour:black+green Material:plastic Size:95 x 48 x 56mm Package Contents: 1 * 0W Bluetooth 5.0 subwoofer power amplifier board Only the above package content, other products are not included. Note: Light 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.