The HDM-550-4K and HDM-420-4K LCD monitors are high performance broadcast UHD monitors tailored to most applications from studio production, outside production and playout and monitoring environments. A slim bezel houses professional IPS glass with a full resolution of 3840 x 2160 and an LED backlight to ensure that the HDM-550-4K and HDM-420-4K monitors reproduce natural color at the fastest response times. The unit boasts a wide viewing angle as well as excellent brightness and contrast ratio. Advanced 10-bit digital signal processing technology plus a 3D comb filter, de-interlacer and highly accurate scaling ensures the monitors portray smoother more natural image reproduction. With Quad-Link 3G-SDI or Quad-Link HDMI (DVI Interface) (up to 1920x1080p60) inputs, the monitor offers multiple display options including a single UHD Display; any single 3G/HD/SD-SDI or DVI/HDMI input upscaled to single UHD Display; or any four separate HD/SD inputs displayed as Quad-Split (up to 1920x1080p60 each). Next to excellent video quality, the HDM-550-4K and HDM-420-4K offer extra functions including on-screen audio metering and IMD.