Features: Delivering 30W+30W power output with efficiency, the tda7377 digital amplifier board drive demanding loudspeaker while minimizing heat generation Suitable for audiophiles, car sound enthusiasts, and needing power amplification in space constrained installations like vehicle sound or home theater builds. Optimized for automotive upgrades, desktop loudspeaker enhancements, and Hifi projects requiring with integrated heat dissipation solution. This sound board simplifies integration through standardized connection while supporting continuous 12V operational via optimized thermal management. Suitable for car loudspeaker, computer loudspeaker, home loudspeaker, other occasions to meet the need of different users. Specifications: Component:Plastic Input: 9-18v Output power: 15W+15W Output impedance: 4-8Ω Chip: tda7377 Size: Approx.90.56x55.12x26.65mm/2.17x3.56x1.05inch Package Includes: 1 Set Power Amplifier Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.