How to make your speaker more louder or DIY computer speaker? This TDA7297 Audio Amplifier module is just right one for you. This audio amplifier board has no current impact sound when booting, low static noise, and a high quality sound: treble delicate, soft, transparent, no harsh; bass strong, full, strong, and acting freely.     The amplifier has been equipped with a heat sink to solve the heat problem, and there is also potentiometer to adjust the loudness, bind to wire the speakers. This module has a max output power up to 15W+15W.