audio digital-to-analog converter
audio digital-to-analog converter
音频数模转换器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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As a test, I downloaded files from HDtracks.com, an online retailer specializing in hi-res audio, plugged a device known as a digital-to-analog converter (DAC) into my computer and listened over earphones.
WSJ: Sonic Truth