Catalin 4K+ was launched on August 20, 2018 as Catalin 4KTV. Launch of the broadcast for series, cartoons, movies and sports with 4K availability. It was the first Ludussian ultra high-definition television channel.
On August 27, 2018, Catalin 4KTV was changed the main schedule like programmings from Catalin SRL with 4K availability.
On April 22, 2019, Catalin 4KTV was renamed as Catalin 4K as part of Catalin SRL's rebranding effort.
On November 4, 2019, Catalin 4K was renamed as Catalin 4K+, because Catalin Unu and Catalin Doi was launched in ultra high-definition simulcast. Unlike TVR HD from Romania, after the closure.
On March 1, 2020, Catalin 4K+ rebranded with new logo and idents.