RPX stands for Regal Premium Experience, which is a movie theater system that offers an immersive movie-watching experience with powerful, uncompressed surround sound and bright, high-quality digital images in 2D and RealD 3D. RPX theaters have custom-built premium environments, including giant immersive screens illuminated by high-quality digital projectors, leather seats, and premium recliners with extra padding to offer maximum comfort. RPX has introduced 4k projectors that can show 4k movies at 33000 lumens brightness and a contrast. The most distinct feature of the RPX system is its immersive audio, which uses Dolby Atmos sound system in the US and Asian or African countries. RPX is one of the most commonly used theater systems on larger movie screens