3Pcs 15W TDA7297 Dual-Channel Amplifier Board For Arduino Features: AC / DC、 2.0 / dual channel / stereo、12V/2A when using、 the output power of 15W +15 W、 peak up 25W +25 WCan be accessed by two 4-8Ω 10-50W speakersA large volume of small sizeHigh signal to noise ratioUpgraded version of the radiator、 wider and thicker、 better cooling effectFit for Bookshelf speakers、 CRT televisions、 radios、 and other small amplifiers Specifications: 1. Working voltage: DC 9-15V2. Power: 15W +15 W3. Maximum power:30W+30W4. Output Impedance: 4-8Ω Package included: 3 x TDA7297 Version Amplifier Boards