Qube Cinema will be demonstrating its system for integrated 4K DCP review and playback at NAB in April. The Qube XP-I server, Xi 4K Integrated Media Block (IMB) and the Quad 3G interface for digital cinema projectors allow postproduction facilities with 4K DI suites to use one projector setup for both HD-4K uncompressed color grading and 2K-4K digital cinema playback.