A complete portable HD studio in a single unit. Single-person operation of sound and picture using faders, buttons and touch screen. The Roland VR-50HD All-in-One AV mixer beautifully integrates an audio mixer, video switcher, multi-viewer touch screen and USB video/audio streaming into a stand-alone device. This single unit delivers functionality that until now required a number of peripheral devices to accomplish. This portable live HD production solution is ideal for schools, churches, council meetings, corporate events, sports, trainings, or any other live event.