Features:Low noise: no current impact sound, high-fidelity no static noise! The sound quality is super good - the high pitch is delicate, soft, transparent, no evident harshness; The bass is firm, full, powerful, and easy to rewind.Applicable power supply: with more than 12V5A battery or more than 12V50W transformer power supply no noise, if the use of switching power adapter or other variable power supply, due to poor linearity may produce low noise.High definitions quality: The 12V power supply small volume power amplifier board is worthy of the super great power amplifier module, the technical staff use this power amplifier board to push two double 3 inch 50W speaker sound quality is the same, do not feel difficult, sound quality is super good.Simple installation: there is a screwdriver on the circuit board to screw the terminal, without using the soldering iron can be quickly connected, even if there is no base for buyer, see the wiring diagram is also very easy to get started, DIY power amplifier is so simple.Wide applicability: bookshelf speaker, CRT TV, radio, small power amplifier, etc.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Size:52*48*40mmProduct name:TDA7297 stereo power amplifier boardOutput power:15W+15WChannel type:2.0 StereoPower input:DC 8-18V/ 2000mAFrequency response:20Hz-20KHzDimension:Length 52 x width 48 x height 40mmMachine weight:55gMatching speaker:4-8 10-80W 3-8 inch speaker, speakerWide of application: Bookshelf speaker, CRT TV, radio, small power amplifier, etc