ITEM NAME:Tda7297 Digital Amplifier Board 15W+15W Hifi 2.0 Dual Channel Audio Amplifi O4J5 Tda7297 Digital Amplifier Board 15W+15W Hifi 2.0 Dual Channel Audio Amplifi O4J5 No current impact sound boot, high fidelity no static noise! Super good sound quality - treble delicate, soft, transparent, no obvious harsh; bass strong, full, powerful, freely. if the board has a little noise, mostly because of the power problem is not solved. After testing, with more than 12V2A battery or 12V30W above transformer power supply no noise, if the switching power supply or other variable power supply, due to poor linearity may produce low noise. The power amplifier board is the core of imported TDA7297 dual-channel amplifier chip, the power supply is designed for DC power supply, 12V battery can be directly
