The HDMI™ 4K×2K Audio Extractor allows you to extract audio signals from your HDMI source. When connecting to a TV or display you don't always get the best audio, or in the case of a PC monitor, no audio at all. So with this Audio Extractor you can take your original HDMI audio signal and convert it to digital optical or analog stereo L/R audio. This means that you can output your audio signal to external speakers or extend your audio signal pathway. Meanwhile, when connecting a 4K×2K display a true video will be performed without down grading the resolution. .