OPAL-A is an analog audio routing switcher. It uses 3Pin (balanced) /RCA (unbalanced) connectors as I/O interface. OPAL-A uses a modular design. Switching sizes range from 4×4 to 16×16. With removable modules, the routing switcher can be configured easily and flexibly.OPAL series features high performance and compact structure. Mix of different signal formats is allowed in a single frame. This OPAL series is equipped with LCD display and buttons on front panel for local control. Both manual and auto switching are supported. Cross point status can be preset and stored for direct switch. RS-232/422 control is supported. Powerful expansion and compatibility is available through using the RS-485 interface for frame cascading control. OPAL series routing switcher is ideal for applications of large screen display projectors, distance learning, command control centers and multimedia conference systems.