The Blackmagic Design ATEM 4 M/E Broadcast Studio 4K is a professional live production switcher designed for UHD 4K broadcast productions. It features 40 12G-SDI inputs, 24 12G-SDI aux outputs, 4 DVEs, 16 ATEM Advanced Chroma Keyers, 4 media players, 4 independent Ultra HD multiviews, 2 SuperSource processors, and even standards conversion on all inputs.