Wireless system from BLX series that combines professional-quality sound with simple setup, and contains headset condenser microphone PGA31, single channel receiver BLX4, body-pack transmitter BLX1 and accessories. Headset microphone with permanently charged electret condenser cartridge delivers detailed, crisp vocals (frequency response 60 Hz-20 kHz) and its unidirectional cardioid polar pattern rejects unwanted noise. Its wireframe construction fits securely for active speakers and vocal performers, while flexible gooseneck design and discrete adjustment capabilities optimize microphone positioning for further source isolation. Microphone also features TA4F connector for connection with the transmitter, and windscreen tames plosives for clean and intelligible sound reproduction. Lightweight body-pack transmitter with ergonomic design provides quick and easy frequency matching, 100 m of transmission radius and connection for headset microphone. It is equipped with Gain control and easily accessible on/off switch, clothing clip and is powered by two AA batteries with up to 14 hours lifespan. Single channel wireless receiver features microprocessor-controlled internal antenna diversity, simple setup and intuitive controls – one-touch QuickScan frequency selection locates the best open frequency in case of interference and allows for up to 12 compatible systems per band. It is equipped with XLR and 1/4'' output connectors and two-colour audio status LED indicator. Power supply for receiver is included. Frequency: 662-686 MHz