The power supply for this power amplifier board requires a 12–24V DC regulated switching power supply with a minimum current rating of 3A. With a 24V 3A power supply, the output power can reach up to 30W into an 8-ohm load. It supports connection to a 30W bass driver and a 10W tweeter. Use with 4-ohm speakers may trigger protection circuitry; full-volume operation may also activate protection. Do not connect a 24V battery, as fully charged voltage may exceed 25V — the onboard capacitor is rated at 25V and could be damaged. Do not connect to vehicle electrical systems (e.g., trucks), where charging voltages may reach 28–32V, risking damage to the board. Maximum Power Per Channel: 30W Model Number: Bluetooth 5.0 Power Amplifier Board Channels: Mono Color: Green Material: Plastic Package Contents: 1 x Amplifier Board 1 x USB Cable Note: Color may vary slightly due to lighting and screen settings. Dimensions may vary by ±1–3 cm.