Grass Valley control panel upgradeD with the LefflerPost controller to give you control over your ATEM switcher. 20 assignable buttons each to switch program, preview and key, tactile control of upstream and downstream keyers, DVE, SuperSource and other functions, a T-bar for transitions, and can even control connected HyperDecks.
See the LefflerPost website for more information about how this works: http://www.lefflerpost.com.au/gvg2atem/
Fully functional as far as I've been able to test, several LEDs are burned out but those are easy to replace. Light scuffing on the chassis, pretty good condition otherwise. Comes with power supply.