Sennheiser SR IEM G4 A wireless monitoring transmitter

The Sennheiser SR IEM G4 A is a professional rackmount transmitter for the evolution wireless IEM G4 system, operating in the 516–558 MHz frequency range. It delivers powerful, reliable UHF transmission with crystal-clear sound, making it ideal for live performances, broadcast and touring applications.

The Sennheiser SR IEM G4 A is the dedicated transmitter for the evolution wireless IEM G4 in-ear monitoring system, designed to meet the demands of professional stage and broadcast environments. Building on the proven performance of the G3 series, this G4 transmitter features increased RF output power for improved coverage and stability across large performance areas.

Operating in the A frequency band (516–558 MHz), the SR IEM G4 offers 1680 tunable UHF frequencies, organized into 20 frequency groups with 16 factory presets plus one user-programmable group for precise frequency selection. This ensures reliable, interference-free transmission even in crowded RF environments.

The transmitter features HDX RF noise suppression for clear, detailed audio reproduction and a robust metal housing for long-term durability on tour or in fixed installations. Switchable RF output power (10/30/50 mW) allows optimization of coverage and battery efficiency. Additional professional features include Ethernet connectivity for system monitoring, loop-through audio outputs, and a lock function to prevent accidental setting changes.

Key Features

• Professional UHF transmitter for evolution wireless IEM G4 systems
• Wide frequency range with 1680 tunable UHF frequencies
• Increased RF output power for extended range and reliable coverage
• HDX RF noise suppression for clear, detailed sound
• 20 frequency groups with 16 presets plus user-tunable group
• Switchable RF power: 10 / 30 / 50 mW
• Rugged all-metal housing for touring and stage use
• Lock function prevents accidental parameter changes
• Ethernet (LAN) connectivity for monitoring and control
• Loop-through LF signal output (loop-out)