AV receivers 4K* meet with much approval. A 4 K format provides information about the resolution.

AV receiver 4K

Behind 4K hides a number of 4000 pixels. The term is used synonymously with UHD. 4K is increasingly becoming the standard format. Exploiting the functionality requires a suitable TV set. UHD specifically stands for Ultra High Definition. UHD and 4K are the successor of Full HD, which had a high status for picture formats in its time.
Compared to Full HD, UHD is four times as sharp. This results in an image rich in detail and contrast, which is essential for a cinema-like experience. The number of pixels amounts to 3860 x 2160 pixels.