AC’97 SoundMAX CODEC AD1986 Rev. 0 is an audio codec with AC `97 2.3 compliant features. It has 6 DAC channels for 5.1 surround sound and S/PDIF output, integrated headphone amplifiers, variable rate audio, greater than 90 dB dynamic range, 20-bit resolution on all DACs and ADCs, line-level mono phone input, high-quality CD input, selectable MIC input with preamp, AUX and line-in stereo inputs, external amplifier power down (EAPD), power management modes, jack sensing and device identification. Additionally, it also features an integrated parametric equalizer, stereo microphone with up to 30 dB gain boost, integrated PLL for system clocking, variable sample rate, and jack sense with auto topology switching.