Sennheiser ew IEM G4-Twin Wireless Monitor System Kit (A: 516 to 558 MHz)

The Sennheiser 509614 is a wireless in ear monitor system kit that equips two performers with dependable personal mixes on stage. It ships with an SR IEM G4 half-rack transmitter, two EK IEM G4 stereo bodypack receivers, and a pair of IE 4 earphones, so you can start monitoring the moment you open the box.

Running in the 516 to 558 MHz A range, the system provides up to 1680 tunable frequencies inside a 42 MHz window. That flexibility makes it easier to find a clear channel in venues where many wireless devices are competing for space. As many as 16 channels can operate at the same time, which covers small to mid-size bands, theater casts, and multi-presenter events.

Daily operation stays straightforward. The transmitter uses an OLED screen that stays legible in bright or dim lighting, and one-touch infrared sync connects each receiver in seconds. A rugged housing tolerates the knocks of touring, while a transmission range of roughly 300 feet lets performers roam large stages without worrying about dropouts.

Each bodypack runs for about six hours on two AA batteries, enough for long rehearsals or extended services. When you need deeper system management, the kit links to Sennheiser Wireless Systems Manager software for coordination and monitoring from a computer.

Whether you are a musician who needs a stable mix every night, a church technician improving vocal monitoring, or a rental house supporting diverse productions, this package delivers the clarity, reliability, and ease of use that have made Sennheiser a trusted name on stage.

• Frequency range: 516 to 558 MHz
• Up to 1680 tunable frequencies within a 42 MHz bandwidth
• Supports as many as 16 compatible channels
• SR IEM G4 half-rack transmitter with OLED screen
• One-touch infrared synchronization
• Operational range up to 300 feet line of sight
• Includes two EK IEM G4 receivers and IE 4 earphones
• Approximate battery life: six hours on AA cells
• Compatible with Sennheiser Wireless Systems Manager software