Studio Technologies 31210 Line Input with Limiter Card Kit for Model 200-SeriesStudio Technologies Studiocomm 31210 Line Input with Limiter Card Kit Allows technician to add line level input to Models 210, 212, 220, 230, and 233 Announcer's Consoles. Sophisticated VCA based circuitry minimizes the chance that abnormally high input signal levels will cause listener discomfort. Installs in back panel spare connector location; maximum two per unit. Card features 3 pin female XLR type connector, isolation transformer, and high