Sennheiser EM 100 G4-A1 Rackmount true diversity receiver. Includes (1) GA3 rack kit, frequency range: A1 (470 - 516 MHz) - 509652

Product Overview

The Sennheiser EM 100 G4-A1 is a professional rackmount true diversity receiver operating in the 470–516 MHz (A1 band) frequency range, part of the Evolution Wireless G4 Series. It provides rock-solid wireless reception for live sound, broadcast, and installed AV applications. The A1-band designation places this unit in the lower UHF spectrum, making it a practical choice where the A-band frequencies are congested. Available at Creation Networks to complement any G4 wireless microphone system.

Product Description

The EM 100 G4-A1 rackmount receiver delivers reliable, professional wireless audio in the 470–516 MHz frequency range. Part of Sennheiser's proven Evolution Wireless G4 platform, it offers true diversity reception with two independent tuners and antennas to virtually eliminate dropouts in demanding live and installed environments. With a 42 MHz tuning bandwidth and up to 20 compatible frequencies per bank, finding a clean channel is quick and easy even in RF-dense venues. The front panel display provides clear readouts of RF signal strength, audio level, transmitter battery status, and active frequency. Audio outputs via XLR (balanced) and 6.3mm jack (unbalanced) accommodate a wide range of mixing consoles and recording interfaces. Automatic frequency scan accelerates setup, and Sennheiser's Wireless Systems Manager software allows network-based monitoring and control. The half-rack housing pairs with the GA 3 adapter for compact dual-unit 1U racking. HD Clear Audio mode extends dynamic range for improved audio quality during performance.

Key Features

• A1-Band Frequency Range (470–516 MHz) — Operates in lower UHF spectrum with 42 MHz bandwidth and up to 20 channels per bank.
• True Diversity Reception — Dual tuners and antennas minimize signal dropouts in complex RF environments.
• Automatic Frequency Scanning — Finds interference-free channels quickly for fast, confident setup.
• Balanced XLR and Unbalanced Jack Outputs — Flexible connectivity for professional audio consoles and interfaces.
• HD Clear Audio Mode — Delivers extended dynamic range with reduced compression artifacts.
• Wireless Systems Manager Compatible — Remote monitoring and frequency coordination via Sennheiser software.
• Half-Rack Design — Uses GA 3 adapter to mount two units per 1U rack space.
• Transmitter Battery Display — Shows remaining transmitter battery life on the front panel for live show confidence.

Typical Applications

• Live vocal and instrument reinforcement for touring and club performances
• Fixed AV installations in houses of worship, conference rooms, and lecture halls
• Broadcast news gathering and studio wireless setups
• Theatre productions requiring stable wireless performance
• Multi-channel wireless systems requiring coordinated frequency management

Technical Specifications

Frequently Asked Questions

What is the difference between the A1-band and A-band models?

The A1 band covers 470–516 MHz (lower UHF) while the A band covers 516–558 MHz. Choose A1 when A-band frequencies are occupied in your region or venue.

Which G4 transmitters are compatible with the EM 100 G4-A1?

All G4 100 Series transmitters in the A1 band: SK 100 G4 bodypack, SKM 100 G4 handheld, and SKP 100 G4 plug-on transmitter.

Can I use G3 transmitters with this receiver?

Yes, Sennheiser G4 receivers are backwards compatible with G3 transmitters in the same frequency band.

How many units can I rack together?

With the GA 3 rack adapter, two half-rack units fit in a single 1U rack space, making it efficient for multi-channel setups.

Does it work with Sennheiser Wireless Systems Manager?

Yes, the EM 100 G4 supports WSM for network-based frequency coordination and system monitoring.