The task was to connect the projector and the set-top box to give out 4k. Distance 15 meters. None of the purchased wires for 15 meters can transmit a signal of such quality, at best it was fhd. I tried 2 adapters and 1 amplifier - the same result. And only this amplifier worked as it should: when connecting 13 and 2 meters, it gave the animals the coveted quality of 4k.
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