Digital signals (like HDMI or SDI) may drop out entirely if the voltage falls below a certain threshold.

In the world of AV distribution, "12 serial" typically refers to two things: the number of output/input ports and the method of control.

Images become fuzzy, and audio loses its dynamic range.

A 12-channel splitter takes one source and sends it to twelve different displays or speakers. Conversely, a joiner (often called a switcher or matrix) takes multiple inputs and consolidates them.

This ensures the source device "talks" to the displays correctly, preventing resolution mismatches.