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Sennheiser EW 100 G4-835-S-A

Evolution G4 wireless system with e835 cardioid dynamic mic capsule (516-558 MHz, "A" band)

Item # 143EW1G48A

Few thing are more embarrassing than having your mic cut out on you in the middle of a song.

Few thing are more embarrassing than having your mic cut out on you in the middle of a song.

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About the Sennheiser EW 100 G4-835-S-A

Expertise and quality

Few thing are more embarrassing than having your mic cut out on you in the middle of a song. Sennheiser puts decades of experience into making the EEW 100 G4 wireless system, giving you the sound quality and reliability that'll take your performance to the next level. 

Expertise and quality

Few thing are more embarrassing than having your mic cut out on you in the middle of a song. Sennheiser puts decades of experience into making the EEW 100 G4 wireless system, giving you the sound quality and reliability that'll take your performance to the next level. 

Long battery life

The EEW 100 G4 system includes the EM 100 G4 receiver and the SKM 100 G4-S microphone/transmitter. The microphone features Sennheiser's famed e835 cardioid dynamic capsule, the centerpiece of their most popular vocal mic. The transmitter runs for up to eight hours on two AA batteries, and also operates with the BA 2015 rechargeable battery pack. Four-stage indicators monitor your battery's charge level. 

Easy setup

The receiver scans automatically for available frequencies and syncs with the transmitter automatically via an infrared interface. The receiver's true diversity reception gives you a dependable connection with the transmitter, while the frequency bank system offers 12 compatible frequencies per bank for simple matching. The transmitter and receiver are both housed in rugged metal cases to shield them from the bumps of life on stage. You'll have no problem setting up and using this system, thanks to the user-friendly operating menus on the transmitter and receiver.


Product highlights:

  • wireless mic system with microphone/transmitter and single-channel receiver
  • includes rack-mount kit, power supply, mic clip, and two AA batteries
  • e835 cardioid microphone capsule
  • transmitter and receiver displays monitor battery life
  • Auto-Lock feature prevents accidental setting changes
  • XLR and 1/4" receiver outputs
  • battery life: up to eight hours
  • frequency response: 80-18000 Hz
  • dimensions:
    • receiver: 8-3/8"W x 1-3/4"H x 6-5/8"D
    • transmitter: 1-5/8" diameter x 7-9/16" L
  • weight:
    • receiver: 2-1/8 lbs.
    • transmitter: 1 lb.
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 507887

What's in the box:

  • EM 100 G4 Wireless receiver
  • SKM 100 Hand-held transmitter (microphone body)
  • MMD 835-1 Microphone head with capsule
  • Stand adapter (3/8" thread)
  • 8" x 4" Adjoining plate
  • Two 4.5" antennas w/BNC connectors
  • 15" Data cable (RJ-10 connectors on both ends)
  • Left / right and rear rack-mounting plates
  • Power supply w/6' cord (12 VDC/500mA)
  • 3 Power supply adapters (US / UK / EU)
  • 2 Plastic hole-caps
  • Two 10mm Phillips-head screws
  • Six 6mm counter-sunk screws
  • 2 AA batteries
  • 4 Rubber stick-on foot pads
  • Quick-start guide
  • Frequency chart
  • Specification chart
  • Safety warnings

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More details on the Sennheiser EW 100 G4-835-S-A

Russ B.

Product Research


Overview: The Sennheiser EW 100 G4-835-S-A is a wireless microphone system designed for singers and presenters. It features an SKM 100 G4-S handheld microphone with built-in transmitter and an EM 100 G4 rack-mountable receiver that have access to 1,680 different frequencies with 42 MHz of operating bandwidth. The microphone is designed for rugged durability, while the receiver's true diversity antenna system provides for a reliable signal transmission, even in large rooms, by letting one antenna pick up the signal if the other one starts to fade out.

System: Operating in the A frequency range (516 - 558 MHz), the system offers up to 42 MHz of tuning bandwidth with 1680 selectable frequencies, adjustable in 25kHz steps, fully tunable in a stable UHF range. Twenty frequency banks are available, each with up to 12 factory preset channels with no intermodulation, and 1 frequency bank with up to 12 programmable channels. The system allows simultaneous setup of up to 12 linked systems utilizing the rear-panel RJ-10 jacks and the included data cable, for daisy-chaining multiple receivers.

Microphone: The included SKM 100 G4-S microphone is a dynamic mic with a cardioid pattern, making it ideal for picking up the person speaking while rejecting sounds from the sides and back. It includes a built-in wireless transmitter, eliminating the need for a separate transmitter pack, and is housed in a rugged aluminum body. The removable microphone head contains an MMD 835-1 capsule, protected by a foam-lined metal-mesh windscreen. The microphone features a Mic button, which mutes the audio (AF Mute) until pressed again, along with an LCD display showing Frequency, Audio Level, Mute, Auto lock, and Battery Level. Beside the LCD display is a small IR sensor for Syncing the mic to the receiver. A main Power button and an LED indicating On/Off and Low Battery are located on the lower end of the mic. This section of the mic also houses a spring-loaded switch for accessing and navigating the menu. The switch can be pressed upward or downward with Set in the middle. A rotating locking collar can be used to cover the switch during normal use to prevent unwanted setting changes. Unscrewing the bottom half of the mic accesses the battery compartment for the 2 AA batteries (included).

Transmitter: The SKM 100 G4-S microphone's built-in transmitter features 30 mW of output power clear reception up to 300 feet. Sennheiser employs a proprietary noise-reduction system called HDX. The HDX compander (compression/expander) circuitry allows the transmitter to produce an RF signal that maximizes the microphone's signal-to noise ratio while avoiding the RF noise inherent in most systems. Once the transmitted RF signal reaches the receiver, it is re-converted into analog audio (using reciprocal receiver-side HDX technology) with accuracy and clarity. This results in audio that sounds as good as that of a wired microphone.

Receiver: The brain of the wireless system is the EM 100 G4 diversity receiver. It's designed to receive the RF signal from the microphone's transmitter, convert it back into an audio signal, and output it to a PA system or audio device for amplification, mixing, or recording. The Sennheiser receiver uses True Diversity technology to ensure stable, uninterrupted wireless reception. The receiver has two independent receiver sections, each with its own antenna, and by means of a comparison circuit, can analyze which one is pulling in a stronger signal and switch to that one. This helps maintain a stable, high-quality signal reducing the possibility of dropouts. Like the microphone transmitter, the receiver also uses Sennheiser's sophisticated HDX noise reduction circuitry that maximizes the microphone's dynamic range while minimizing undesirable sound artifacts and transmission noise. This results in a clear, full sound with a CD-quality signal-to-noise ratio.

  • Receiver Front Panel:
    • Sync: This button is used to sync the receiver and mic/transmitter in the initial setup procedure. After a Bank and Channel have been set on the Receiver, the mic can be held in front of the receiver, IR sensor of the receiver facing the IR sensor on the microphone, and all setup parameters will get transferred to the built-in transmitter, making for a faster setup.
    • Up/Down: These two buttons cycle the cursor up and down through the menu options on the LCD display.
    • Set: Similar This will select whichever option is highlighted in the display.
    • Power: Turns unit on/off.
    • Esc: The Escape button will back you out of a menu setting to the home screen.
    • LCD Display: During normal operation, the front panel Display will show the following information:
      • Diversity Antenna: Icons of Roman numerals I and II indicate which diversity antenna is currently picking up the signal.
      • RF Level (RF): This 4-segment meter displays the Radio Frequency or "connection" level between the Transmitter and the Receiver.
      • Audio Level (AF): This is also a 4-segment meter, with Peak indicator, to display the audio level from the microphone.
      • Bank and Channel Numbers
      • Frequency: Displays the Frequency associated with the current Channel.
      • Name: Allows you to enter a name for the Receiver. Default is the unit's model number.
      • P (Pilot tone): Indicates whether the Squelch control's Pilot Tone is activated or not.
      • Mute: Displays if the Muting function is on.
      • Battery Status: A 3-segment meter shows the charge status of the batteries.
      • Lock icon: Shows if Lock mode is activated or not.
  • Rear Panel:
    • DC Power: 12V/300mA power input with strain-relief cord holder.
    • Outputs: One balanced, male, 3-pin XLR jack and one 1/4" unbalanced jack.
    • Data: Two RJ10 Data jacks allow you to cascade multiple EM 100 G4s into a multi-channel system that can have up to 12 receivers linked together. You can perform a frequency setup for the entire multi-channel system in the Easy Setup menu in this configuration.
    • ANT I/II: These are 2 locking BNC connectors for the diversity antennas to plug into.

Easy Setup: Sennheiser has simplified the setup process with their Easy Setup option in the receiver's menu. When this is selected, the unit will scan all available channels and will suggest a bank with the most free channels. After selecting a Bank/Channel for the Receiver, the Sync option allows the microphone to be placed in front of the Receiver, IR display to IR display, and the Bank/Channel selection will be set automatically on the transmitter, matching the receiver. Bank and Channel selections can be made manually as well. If multiple receivers are linked together via RJ10 connectors (cable included), the frequency setup for all of them can be performed at the same time.

Squelch: Squelch is the ability of a transmitter and receiver to suppress or mute the channel if the signal level weakens enough. This helps keep out unwanted channel noise and stray signals from other wireless devices, especially when there's no signal being sent from the mic transmitter. The EW 100 G4 system includes built-in Squelch control along with a Pilot Tone. The Pilot Tone is a continuous signal sent by the receiver that the transmitter looks for, and if gets weak enough or disappears completely, the receiver will stop receiving completely. The Pilot Tone can be turned off if needed, such as when more than one microphone are using the same channel. An RF level meter on both the microphone LCD and the receiver display the signal level along with a "P" icon that displays if the Pilot Tone is activated.

Lock Mode: The EW 100 G4 includes an Auto Lock feature that, when activated, keeps the controls from working unless temporarily deactivated. Once deactivated, the Lock Mode is automatically activated after 10 seconds while the standard display is shown. If the menu is displayed, it will stay deactivated as long as long as you're in that menu. A Lock icon on the receiver and microphone will display the Lock status.

Rack Mounting: All hardware to rack mount the EM 100 G4 receiver, either stand-alone or linked to a second receiver, are included. Two side plates are used in either application. A blanking plate is included, for rack mounting singly, which includes two holes for relocating the antennas from the rear panel to the front (Antenna extension cables not included). An adjoining plate is included that screws into the bottom of each receiver when rack mounting two units side by side.


  • EM 100 G4 (Receiver):
    • Modulation: Wideband FM
    • Receiving Frequency Ranges: 516-558 MHz
    • Receiving Frequencies: 1,680 frequencies, tunable in 25 kHz steps, 20 Banks, each with up to 12 factory preset Channels, 1 Bank with up to 12 user programmed Channels
    • Switching Bandwidth: 42 MHz
    • Nominal/Peak Deviation: +/-24 kHz / +/-48 kHz
    • Receiver Principle: True diversity
    • Sensitivity (with HDX, peak deviation): < 2.5 μV for 52 dBA
    • Adjacent Channel Rejection: >/= 65 dB
    • Intermodulation Attenuation: >/= 65 dB
    • Blocking: >/= 70 dB
    • Squelch: Off, Low: 5 dBμV, Middle: 15 dBμV, High: 25 dBμV
    • Pilot Tone Squelch: On/Off
    • Antenna Inputs: 2 BNC sockets
    • Compander System: Sennheiser HDX
    • EQ Presets (switchable):
    • Preset 1 "Flat": Full-range signal
    • Preset 2 "Low Cut": -3 dB at 180 Hz
    • Preset 3 "Low Cut/High Boost": -3 dB at 180 Hz, +6 dB at 10 kHz
    • Preset 4 "High Boost": +6 dB at 10 kHz
    • S/N Ratio (1 mV, peak deviation): >/= 110 dBA
    • THD: </= 0.9%
    • AF (audio frequency) Output Voltage: Unbalanced 1/4" jack: +12 dBu, Balanced XLR jack: +18 dBu
    • Audio Output Adjustment Range: 48 dB (in steps of 3 dB), +6 dB gain reserve
    • Power Supply: 12 VDC
    • Current Consumption: 300 mA
    • Dimensions: Width - 8.32", Depth - 7.50", Height - 1.625"
    • Weight: Approx. 2.16 lbs.
  • SKM 100 G4-S (Microphone Transmitter):
    • Modulation: Wideband FM
    • Frequency Ranges: 516-558 MHz
    • Transmission Frequencies: 1,680 frequencies, tunable in 25 kHz steps, 20 Banks, each with up to 12 factory preset Channels, 1 Bank with up to 12 user programmed Channels
    • Switching Bandwidth: 42 MHz
    • Nominal/Peak Deviation: +/- 24 kHz / +/- 48 kHz
    • Frequency Stability: < +/- 15 ppm
    • RF Output Power at 50Ω: 30 mW
    • Pilot Tone Squelch: On/Off
    • Compander System: Sennheiser HDX
    • AF (audio frequency) Frequency Response: 80Hz - 18kHz
    • S/N Ratio (1 mV, peak deviation): >/= 110 dBA
    • THD: </= 0.9%
    • Maximum Input Voltage, (mic/line): 3 V rms
    • Input Impedance (mic/line): 40 kΩ
    • Input Capacitance: Switchable
    • Input Sensitivity Adjustment Range: 48 dB, adjustable in steps of 6 dB
    • Temperature Range: 14˚ F - 131˚ F
    • Power Supply: 2 AA batteries, 1.5 V
    • Nominal Voltage: 3V (battery), 2.4V (rechargeable)
    • Current Consumption:
      • At nominal voltage: 180 mA (30 mW)
      • With transmitter switched off: </= 25 μA
    • Operating Time: Approx. 8 hrs.
  • SKM 100 G4-S (Microphone):
    • Microphone Type: Dynamic
    • Sensitivity: 2.1 mV/Pa
    • Pick-up Pattern: Cardioid
    • Frequency Response: 80Hz - 18kHz
    • Maximum SPL: 154 dB
    • Dimensions: Diameter - 2.0", Length - 10.188"
    • Weight: 0.99 lbs.

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