AD1987:  HD Audio Codec, 8 DACs/4ADCs, Exceeds Microsoft Vista Premium   Performance
     The AD1987 audio CODEC and SoundMAX software provide superior HD Audio   quality that exceeds Vista Premium performance. The AD1987 has 8 DACs and 4   ADCs, 3 stereo headphone ports, C/LFE swapping, digital and analog PCBeep and   S/PDIF, making AD1987 the right choice for desktop PCs where performance is the   primary consideration.
     The jack retasking feature supports various configurations including   platforms for 7.1 on 5 jacks, 5.1 on 3 jacks and front panel jack retasking.
     AD1987 特点
     
        - Superior audio sound quality from Sonic Focus' audio enhancement   technologies. By adjusting a set of user controls, the audio quality of solo   vocals, instruments and bass can be significantly improved. 
 
        - Improved VOIP and speech recognition experience with microphone noise   reduction, beam forming, and echo cancellation technologies 
 
        - Realistic gaming experience with licensed EAX 1.0 and 2.0 from Creative   Technology Ltd 
 
        - Supports 7.1 and 5.1 + Independent Headphones configurations 
 
        - Analog mixer supports recording and playback of signals from multiple   sources 
 
        - Drivers for W2K, W2K3, WINXP, Vista, and Linux (from ALSA); WHQL   pre-qualified 
 
        - Analog and Digital PC Beep 
 
      
     AD1987  应用技术支持与电子电路设计开发资源下载
     
       - AD1987 数据手册DataSheet 下载 . PDF
 
       - ADI 模拟器件公司比较器产品选型指南 . PDF
 
       - Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF