HDTV Supplys 4K 1x2 HDMI Splitter with Audio Extractor & Up Down Scaler allows you to extract 4K HDMI for both digital optical S/PDIF (Toslink) and stereo analaog audio signal for use by an amplifier or AV receiver. With a special feature to do upscale 1080p signal up to 4K or Downscale 4K signal to 1080p. Full OSD operation by using 5 way joystick switches for easy set up and doing EDID management. It is a perfect solution for integrating a 4K source into a 1080P HD system or vice versa.