ITEM NAME:TDA2030 A Finished Power Amplifier Board HIFI 2.0 2 Channel 15W+15W LM1875 Product Description Description: TDA2030 A Finished Product Power Amplifier Board HIFI 2.0 2 Channel 15W+15W Compatible LM1875 Specification: Output power: 15W+15W Types of vocal tract: 2.0 stereo Power input: AC dual 12V Frequency response: 20Hz-100KHz Outline size: 90*90*42mm/3.54*3.54*1.65'' Matching speakers: 4-8ohm 10-30W 3-6.5 inch bookcase speakers, small speakers. Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x Power Amplifier Board.Output power: 15W+15W. Included: 1 x Power Amplifier Board. Power input: AC dual 12V. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.