IFBT4/X by LECTROSONICS is a professional wireless audio unit for IFB and event applications. It provides programmable RF channels in the UHF band, low latency audio, and robust modulation with filtering. The unit supports multiple power options and removable antennas, with front panel controls for channel selection, level monitoring, and RF status indicators. Refer to the official data sheet for exact frequency range, channel count, and power specifications.