Nureva HDL300 SystemNureva HDL300 System The Nureva HDL300 System is an integrated microphone and speaker bar designed to deliver true full room microphone coverage and rich, clear playback in mid size spaces up to 25' x 25' (7. 6 x 7. 6 m). From meeting rooms and classrooms to flexible and studio spaces, the HDL300 is engineered to capture every voice with natural clarity while delivering crisp, intelligible sound to all participants. Its streamlined, compact form