KKHMF 2pcs TDA7297 AC/DC 12V 2*15W Digital Stereo Audio Amplifier

• Output power: 15W + 15W; Channel type: 2.0 stereo; Power input: DC 8-18V/2000mA; Frequency response: 20Hz~20KHz; Matching speaker: 4-8Ω 10-80W 3-8 inch speaker, speaker.

• Scope of application: bookshelf speakers, CRT televisions, radios, small power amplifiers, etc.

• Play music: When powered on, the power amplifier board will be activated and the blue power indicator light will be on. You can adjust the volume knob according to your preference.

• If the noise is low, it may be due to an unresolved power problem. After testing, there is no noise at all when using a battery above 12V5A or a transformer above 12V50W. Using switching power adapters or other variable power supplies may produce low noise due to poor linearity.

• The power amplifier board may be short-circuited or burnt out, so please install it in a place where there are no conductive objects such as metal objects. Before turning on the power, be sure to check that the components are connected correctly and connect them according to the wiring diagram to avoid burning out the board due to wiring mistakes. Turn off the amplifier if it will not be used for a long period of time.