Shure BLX4 Wireless Receiver for BLX Wireless System - H9 Band option-title-70-Degree The DSI card also provides

The DSI card also provides a word clock output for synchronizing external digital devices

enabling you to capture musical details

you can combine them to get anywhere in between

Infrared automatic transmitter sync

Shure BLX4 Wireless Receiver for BLX Wireless System - H9 Band option-title-70-Degree The DSI card also providesShure BLX4 Wireless Receiver for BLX Wireless System H9 Band Analog wireless receiver provides improved linearity and frequency response with group and channel scan for easy set up. Features include microprocessor internal antenna diversity, frequency QuickScan, and two color audio status indicator LED. Features: For Small Venues and Conference Rooms Single Channel, Portable Tabletop Design 123 Auto Scan Frequencies Internal Antenna Diversity