14. Are ZapperBox and Dolby AC-4 backward compatible with legacy audio systems?

All ATSC 3.0 broadcasts in the US carry Dolby AC-4 audio. The ZapperBox M1 can:

1. Transcode AC-4 to Dolby Digital Plus or MAT when connected to newer AV receivers and Dolby Digital when connected to legacy AV receivers.

2. Decode any Dolby encoding to PCM stereo in Downmix Mode and send it over HDMI.

3. Passthrough AC-4 audio over HDMI if the connected device is capable of decoding AC-4 audio.
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