Use the STA515W class D amplifier from STMicroelectronics to increase your sound quality. Its maximum power dissipation is 21000 mW. It has a single input signal and a differential and single output signal. It has a minimum load resistance of 4 Ohm and a maximum of 8 Ohm. It has a 1-channel mono|2-channel stereo|4-channel stereo output. This audio amplifier has a minimum operating temperature of 0 °C and a maximum of 70 °C. This device uses a single power supply.