The Blackmagic Design SmartScope Duo 4K Rack-Mounted Dual 6G-SDI Monitors is a monitoring solution for studio and location productions, displaying video with resolutions up to 3840 x 2160 at 30p. It features two 8" monitors each with a loop-through SDI input and output. The inputs are auto-sensing/selecting so you don't have to worry about matching the input format; the monitor will display any supported format that you feed it. You can choose to select to display either the input video or one of six scope displays, while the input video passes through the monitor to downstreamed devices.