Presenter/vocal headset wireless system from BLX series that combines professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box, containing a rack-mount receiver BLX4R, an analogue body-pack transmitter BLX1 and an ear-set microphone MX153. Rack-mountable and featuring rugged metal construction, the receiver offers simple setup and intuitive controls. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference, while removable antennas allow for quick antenna distribution. It provides XLR and 6.3mm output connectors with adjustable output level, an LCD screen with detailed RF and audio metering and a two-colour audio status indicator LED. The body-pack transmitter features power and battery status LED, an adjustable gain control and quick and easy frequency matching. It is powered by AA batteries (included) that provide up to 14 hours of continuous use. The professional sub-miniature ear-set Microflex microphone provides outstanding clarity and enhanced plosive protection with no proximity effect in an extremely comfortable over-the-ear design and is ideal for applications in which improved gain before feedback over lavalier microphones is desired. Delivering exceptional speech clarity, it is ideal for corporate presentations, houses of worship, A/V conferencing, and live sound reinforcement. It is terminated with TQG/TA4F connector for direct connectivity to Shure wireless body-pack transmitters and features Kevlar reinforced soft flex cable. The CommShield Technology guards the microphone against interference from cellular RF devices and digital body-pack transmitters. The microphone includes a protective storage pouch, three windscreens, and a collar clip. The system provides a 100m operating range under typical conditions and comes supplied with single and dual rack-mount kit, two 1/4 wave antennas, a zipper bag, a power supply and two AA batteries. Frequency: 518-542 MHz