Blackmagic Design ATEM Talkback Converter 4K Support talkback for up to 8 cameras for Blackmagic Studio Cameras. Includes 12G-SDI for all formats up to 2160p60, front panel mic and headset connections and more. During busy live production it's vital to be able to talk to your camera operators. ATEM Camera and Studio Converters take advantage of the 16 channel SDI audio standard and embed the talkback into rarely used channels 15 and 16. ATEM Camera Converter uses standard PC or iPhone type headsets while the ATEM Studio Converter uses more robust aviation headsets that are available in hundreds of different styles! ATEM Studio Converter also features a built in microphone input and speaker so you don't need to use a headset.