Sennheiser SR IEM G4 Stereo Transmitter (A: 516 - 558 MHz)

Product #52397 | SKU SR IEM G4-A | Sennheiser
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  • A Band (516 to 558 MHz)
  • Full-Metal Housing with OLED Display
  • Wireless Infrared Synchronisation
  • Up to 16 Compatible Channels
  • Up to 42 MHz Bandwidth


The SR IEM G4 Stereo Transmitter from Sennheiser is an addition to their evolution series of wireless systems. It features wideband FM stereo modulation and can be used when paired with a companion receiver as part of a wireless RF monitoring system for live stage, theatre, and rehearsal applications.

The stereo transmitter is equipped with 1680 frequencies tunable in 25 kHz steps and has 20 fixed frequency banks, with up to 16 compatible frequency presets and 6 user banks with up to 16 user-programmable frequencies. The receiver's menu-driven backlit OLED display shows current frequency, frequency bank and channel number, metering of AF level, transmission status, equaliser settings, lock status, and input sensitivity. An auto-lock feature is provided to prevent settings from being accidentally altered.

Additionally, associated receivers can be synchronised with the transmitter via an integrated infrared interface. This transmitter is built with two electronically balanced XLR/1/4" combo sockets, a 1/4" headphone output with headphone volume control, an Ethernet port (RJ-45 for remote network-based monitoring), and a 50 Ohm BNC-type antenna input. Finally, it has a rugged metal housing and includes a 12 V power supply and a GA 3 rackmount kit.


  • Half-rack stereo transmitter in a full-metal housing with OLED display for full control.
  • Easy and flexible wireless synchronisation between transmitter and receiver via infrared.
  • Compatible with Sennheiser WSM control software for flexible frequency allocation.
  • Up to 16 compatible channels.
  • Up to 42 MHz bandwidth with 1680 selectable frequencies, fully tunable in a stable UHF range.
  • Transmission Range: up to 100 metres .
  • High RF output power (up to 50 mW) depending on country regulations.


Modulation Wideband FM stereo (MPX pilot tone)
Frequency Band A: 516 to 558 MHz
Receiving Frequency Maximum 1680 receiving frequencies, adjustable in 25 kHz steps
20 frequency banks, each with up to 16 factory-preset channels, no intermodulation
6 frequency banks with up to 16 programmable channels
Switching Bandwidth up to 42 MHz
Nominal/Peak Deviation ±24 kHz / ±48 kHz
MPX Pilot Tone 19 kHz/ ±5 kHz (frequency/deviation)
Frequency Stability ±10 ppm
Antenna Output BNC socket, 50 Ohms
RF Output Power @ 50 Ohms Switchable:
Low: Typical 10 mW
Standard: Typical 30 mW
High: Typical 50 mW
Compander Sennheiser HDX
AF Frequency Response 25 Hz to 15 kHz
AF Input Electronically Balanced
2 x XLR-1/4" / 6.3 mm balanced combo jack
Balanced AF in L +Mono
Balanced AF in R
Maximum Input Level +22 dBu
Total Harmonic Distortion (THD) ≤ 0.9 %
Signal to Noise Ratio Approximately >90 dB (nominal load and peak deviation)
AF Output 1/4" / 6.3 mm stereo jack socket balanced
Loop out balanced L, loop out balanced R
Temperature Range 14 to 131°F / -10 to 55°C
Power Supply 12 VDC
Current Consumption Maximum 350 mA
Dimensions (W x L x H) 202 x 212 x 43 mm
Weight 980 g

In The Box

  • Sennheiser SR IEM G4 Stereo Transmitter (A: 516 to 558 MHz)
  • Rod Antenna
  • Power Supply
  • GA 3 Rackmount Kit for G3 100/300/500 Series


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  • Product: Sennheiser SR IEM G4 Stereo Transmitter (A: 516 - 558 MHz)
  • Manufacturer: Sennheiser
  • Model: SR IEM G4
  • SKU: SR IEM G4-A
  • RM Product #: 52397
  • Warranty: 2 year manufacturer warranty

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