The AT73C213 is a fully integrated, low-cost combined stereo audio DAC and audio amplifier circuit targeted for Li-ion or Ni-Mh battery-powered ... Power Management for Mobiles (PM) / audio Interface for Portable Handsets
20W/40W, Filterless, Spread-Spectrum, Mono/stereo, Class D Amplifier From old datasheet system The MAX9708 mono/stereo, Class D audio power amplifier delivers up to 2 x 21W into an 8 stereo mode