Wireless Pro System. Contains a single dual-channel transmitter with a 2-antenna system (either dual mono or stereo switchable) for true diversity operation. A front panel LCD screen with dual frequency display conveniently shows the RF frequency and channel as well as the AF signal level for each channel. This system works perfectly well through walls, floors and ceilings, providing setup flexibility that far exceeds conventional hard-wired systems and also greatly reduces the setup time of a travelling or temporary sound system. Auto frequency scan and sync between transmitter and receiver units. Two XLR + balanced TRS ¼" combo inputs. Single XLR output sends the signal to powered speaker array a traditional amplifier-and-speaker combo. Aluminum and steel enclosures and removable antennae. Rack-mountable transmitter with optional front panel antenna placement. Trim size is easily 1U rack-mountable; two fit side-by-side in 19" rack. BNC extension cables included. Stealth Wireless Pro Expander Packs available.