The Sennheiser EK IEM G4-A1 is a professional wireless in-ear monitor receiver designed for stage performers, musicians, presenters, and production crews who need reliable, interference-free monitoring. It forms part of the Evolution Wireless G4 series and operates in the A1-band (470–516 MHz), a widely used UHF range suitable for live sound environments.
Key Features
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Operating frequency range: 470–516 MHz (A1-band)
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Up to 1 680 selectable frequencies in 25 kHz steps
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Wide 42 MHz switching bandwidth
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Stereo, mono, and Focus listening modes
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Adaptive diversity reception for maximum RF stability
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High-contrast LCD screen for easy menu navigation
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Adjustable EQ, balance, and volume levels
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Rugged metal housing suitable for touring and installers
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Headphone output: 3.5 mm stereo jack
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Power options: 2 × AA batteries or BA 2015 rechargeable pack
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Typical operating time: approximately 4–6 hours depending on battery type and volume level
Technical Specifications
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Modulation: Wideband FM
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Signal-to-noise ratio: approximately 90 dBA
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Output power: up to 2 × 100 mW at 32 ohms
