VADU 19XG27A2012 VADU 19XG27A2012 features one video input that is distributed and amplified to four video outputs. • One input, four output Standard Definition (SD) composite • One input, four output High Definition (HD) Serial Digital Interface (SDI) The unit is fitted with BNC coaxial connectors for both SD composite video and SDI Digital video. The units are packed in a single frame containing two fully separated amplifiers.