Proshows innovates again! Since June 2022 Proshows is officially the first audiovisual rental company in Greece to own the K3 sound System. K3 is the new entry in L' acoustics Family. It is a powerfull Large-format system in a compact size and that makes it one of the most promising products in the events industry. K3 debuted in Syntagma Square during a large scale event in June 2022.