Portable single channel IFB beltpack with 1/4-inch jack. Meets critical requirements of the television broadcast industry, as well as other live or recorded media applications. System is composed of user stations, central electronics and control panels. A modular approach assures the optimum configuration for each installation. Should system expansion be desired, additional components may be added as necessary. A typical system may consist of the following: up to four control panels, one central electronics unit, four user stations and assorted cabling and interconnect units. Maximum standard configuration allows four control panels, three central electronics and twelve user stations.