Shure BLX Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage.System IncludesBLX2 Handheld transmitter with PG58 microphone cartridge.BLX4R Rack-mountable receiver with removable antennas for quick distribution.FeaturesFrequency Range: 614MHz-638MHzIntegrated microphone capsule design, featuring PG58, SM58®, or Beta 58A® optionsLightweight, rugged constructionColor ID caps (available separately)Rack-mountable and featuring rugged metal construction, the BLX4R offers simple setup and intuitive controls. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. Removable antennas allow for quick antenna distribution. For use with BLX Wireless Systems. Rack mount kit included.XLR and ¼ inch output connectorsMicroprocessor-controlled internal antenna diversityTwo-color audio status indicator LED - Green: Normal audio levels, Red: Excessive audio levels (overload / clipping)Adjustable output levelLCD display with detailed RF and audio metering