Sennheiser Evolution IEMG4-TWIN-B Twin Wireless In-Ear Monitoring System (B Band 626 - 668 MHz)



  • Higher RF output power of up to 50mW
  • Enhanced frequency bank system
  • Adaptive diversity for high reception quality
  • Automatic frequency scan feature searches for available frequencies
  • Enhanced AF frequency range
  • Fast and easy wireless synchronization between transmitter and receiver
  • User-friendly menu operation with convenient jog wheel
  • OLED display with automatic dimming
  • HDX compander for crystal-clear sound
  • Benefit from up to 8 hours of operation time
  • Backwards-compatible with previous evolution G1, G2, and G3 systems
  • Sturdy metal housing
(0) No Reviews yet
RRP:  $2,199.00 
Out of Stock - Order In
Select store to check availability.


The Sennheiser Evolution IEMG4-TWIN-B Twin Wireless In-Ear Monitoring System (B Band 626 - 668 MHz) get all the components you need for quality wireless transmission: a high-quality rackmountable transmitter with 1,680 tunable UHF frequencies, two bodypack receivers, and two pairs of IE 4 earphones. With the ew IEM G4-Twin, you'll enjoy increased bandwidth and power over previous generations, a transmission range up to 330 feet, and backward compatibility with previous evolution systems.

You can rely on this rackmount transmitter

The rugged SR IEM G4 is ready for the road with its proven transmission reliability and inspiring flexibility. It operates up to 61 channels with up to 42MHz of bandwidth and 1,680 selectable frequencies. Plus, it offers higher RF power of up to 50mW for crystal-clear reception. An upgraded infrared interface results in faster synchronization. The SR IEM G4 also features a user-friendly menu with a convenient jog wheel and an OLED display with automatic dimming, blue sync LED, red warning LED, and dedicated Escape button.

A compact receiver packed with the features you need The EK IEM G4 features adaptive diversity for super-reliable reception. Its headphone cable is utilized as a second antenna to banish audio dropouts. Operating the EK IEM G4 is also easy due to its intuitive menu navigation and highly-visible backlit graphics display. A switchable Hi Boost and a multi-level limiter complete the package.

Sennheiser's commitment to quality Sennheiser wireless products give you the reliability you need onstage, on the worship platform, in the meeting room, or for any other application that requires mobility plus clean, clear, intelligible sound. From handheld, mic-based transmitters to bodypack units, from versatile rackmountable receivers to premium-quality accessories, Sennheiser puts a commitment to quality in every wireless product they make.


DimensionsApprox. 202 x 212 x 43 mm
Approx. 82 x 64 x 24 mm
CompanderSennheiser HDX
THD, total harmonic distortion<0.9 %
≤ 0.9 %
WeightApprox. 980 g
(incl. batteries) approx. 125 g
Audio input2x XLR-3/¼" (6.3 mm) jack combo socket, electronically balanced
Audio output¼" (6.3 mm) stereo jack socket, balanced
Signal-to-noise ratio>90 dB
approx. 90 dBA
RF output powerswitchable: Low: typ. 10 mW, Standard: typ. 30 mW, High: typ. 50 mW
Switching bandwidthup to 42 MHz
Peak deviation±48 kHz
Nominal deviation±24 kHz
Operating timeapprox. 4 to 6 hours (depending on volume level)
ModulationWideband FM stereo (MPX pilot tone)
Wideband FM
Power supply12 V DC
2 AA batteries, 1.5 V or BA 2015 accupack
Current consumptionmax. 350 mA
at nominal voltage: approx. 140 mA 
with transmitter switched off: ≤ 25 µA
Adjacent channel rejectionTypically ≥ 65 dB
Audio-Output-Power2 x 100 mW at 32 Ω
Intermodulation attenuationTypically ≥ 70 dB
Limiter–18 dB to –6 dB, adjustable in steps of 6 dB, can be switched off
Max. Input voltage+22 dBu
Powering3 V battery / 2.4 V rechargeable battery
Receiving frequencyMax. 1680 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
RF sensitivity< 4 μV, typ. 1.6 μV for 52 dBA rms S/N
Squelch5 to 25 dBµV, adjustable in steps of 2 dB
Transmission frequencyMax. 1680 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
AF frequency response25 Hz to 15 kHz
Bass Boost+8 dB at 80 kHz
Temperature Range-10 °C to +55 °C
Receiver PrincipleAdaptive diversity
Frequency stability±10 ppm
Blocking≥ 80 dB
Antenna OutputBNC socket, 50 Ω

What's In The Box

Sennheiser EW IEMG4-TWIN-B - Twin Wireless In-Ear Monitoring System (B Band 626 - 668 MHz)
  • (1) SR IEM G4 stereo transmitter
  • (2) EK IEM G4 stereo bodypack receiver
  • (2) pair of IE4 earbuds
  • (1) GA3 rackmount kit

Ratings & reviews

No reviews available

Be the first to Write a review