In-ear monitoring set: ear-canal phones with various ear-fitting pads, adaptive diversity receiver for high reception quality. Remote-controllable via ''Wireless Systems Manager''. Hear better, perform better. Sennheiser monitoring systems are trusted by professionals worldwide and now are better than ever. Featuring an adaptive-diversity receiver, the receiver pack uses the headphone cable as a secondary antenna for flawless reception. Ear-canal phones, with various ear-fitting pads for an individual fit, reproduce the signal from the adaptive diversity receiver precisely and faithfully. Pass-through outputs allow easy splitting of the input signal to travel to other devices. Lastly, the entire set can be monitored and remotely controlled with Sennheiser's ''Wireless Systems Manager'' software due to the built-in Ethernet port on the stereo transmitter. Features Sturdy metal housing (transmitter and receiver 42 MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 16 compatible frequencies Ethernet port for connecting to the Wireless Systems Manager (WSM) software for control via computer - this delivers a good overview of monitoring and professional data management for multi-channel systems Adaptive diversity for high reception quality Pilot tone squelch for eliminating RF interference when transmitter is turned off Automatic frequency scan feature searches for available frequencies Enhanced AF frequency range Increased range for audio sensitivity Wireless synchronization of receiver parameter from transmitter User-friendly menu operation with more control options Illuminated graphic display Auto-Lock function avoids accidental changing of settings HDX compander for crystal-clear sound Receiver feature battery indicatation in 4 steps Mute function for transmitter HiBoost, adjustable limiter, stereo/focus mode, balance in receiver Contacts for recharging BA 2015 accupack directly in the receiver Wide range of accessories adapts the system to any requirement. Frequency: 626 - 668 MHz