Kaleido-Modular-X: High Picture Count, Ultra-Flexible and Scalable Multiviewer (up to 64x4) Datasheet (DS-PUB-2-0134A-EN) File size: 16.2 MB, posted Apr 22 2021 Kaleido-Modular-X from Grass Valley is a flexible and scalable 4K-ready multiviewer perfectly suited for applications covering everything from TV production to playout. These adaptable multiviewers are optimized for the space, power and weight considerations found in studios, outside broadcast trucks and playout facilities.