Sennheiser EW IEM G4-TWIN-A | Twin In Ear Monitor ...
$1,749.00
The Sennheiser EW IEM G4-TWIN-A is a professional UHF wireless in-ear monitoring system designed for musicians, vocalists, live bands, touring productions, theaters, and houses of worship. Operating in the 516-558 MHz frequency range, this complete two-person monitoring package includes one SR IEM G4 stereo transmitter, two EK IEM G4 bodypack receivers, and two pairs of IE 4 in-ear headphones. With up to 42 MHz switching bandwidth, 1680 selectable frequencies, infrared synchronization, and a wireless operating range of up to 100 meters (328 feet) under favorable conditions, the system provides flexible stage monitoring without restricting performers to wired connections. The rugged metal transmitter features an OLED display and network compatibility with Sennheiser Wireless Systems Manager software, while the compact bodypack receivers deliver adjustable stereo or Focus monitoring for professional live sound applications.
The Sennheiser EW IEM G4-TWIN-A provides a complete wireless in-ear monitoring solution for two performers who need clear, dependable audio while moving freely around a stage or performance area. The package includes a half-rack SR IEM G4 stereo transmitter, two compact EK IEM G4 bodypack receivers, and two pairs of IE 4 earphones. Both receivers can monitor the same stereo transmission, allowing two users to listen without requiring a separate transmitter for each performer. The system operates in the A frequency band from 516 MHz to 558 MHz, offering up to 42 MHz of switching bandwidth and 1680 selectable frequencies in 25 kHz increments. Sennheiser HDX companding and wideband FM transmission provide a frequency response of 25 Hz to 15 kHz with a signal-to-noise ratio exceeding 90 dB, making the system suitable for professional music and vocal monitoring.
The SR IEM G4 stereo transmitter is built into a rugged metal half-rack enclosure with a high-contrast OLED display for monitoring frequency settings, audio levels, transmission status, and other operating parameters. Two electronically balanced XLR/1/4-inch combination inputs accept left and right audio signals from compatible mixers and monitoring consoles, while two balanced 1/4-inch loop outputs allow the incoming audio signals to be passed to additional equipment. A front-panel headphone output provides local audio monitoring. The transmitter supports selectable RF output power settings of 10 mW, 30 mW, and 50 mW, depending on regional regulations, and provides an operating range of up to 100 meters under favorable conditions. A rear-panel RJ45 Ethernet connection enables network-based monitoring and control through Sennheiser Wireless Systems Manager software, making it easier to coordinate multiple compatible wireless systems in professional productions.
Each EK IEM G4 bodypack receiver features adaptive diversity reception, a backlit display, and integrated controls for monitoring adjustments. Users can select conventional stereo monitoring or Focus mode, which combines the transmitter's two audio channels into a mono headphone signal while allowing the relative levels of those channels to be adjusted. This is particularly useful when one audio channel carries vocals and the other carries instruments or a backing mix, allowing each performer to adjust their preferred balance independently while sharing the same transmitter. Additional receiver functions include adjustable squelch, selectable high-frequency boost, and headphone limiting with settings from -18 dB to -6 dB or off. The headphone amplifier provides up to 2 x 100 mW at 32 ohms, while the included IE 4 earphones provide personal in-ear monitoring for rehearsals, performances, and stage productions.
Wireless setup is simplified through infrared synchronization between the SR IEM G4 transmitter and EK IEM G4 receivers. Frequency banks contain factory-configured frequency presets, while additional user-programmable banks allow custom frequency assignments for more complex RF environments. The system supports frequency coordination for up to 16 compatible wireless monitoring channels when additional transmitters and receivers are used. Each bodypack operates on two AA batteries for approximately four to six hours depending on listening volume, and compatible Sennheiser BA 2015 rechargeable battery packs can be used separately. Compact receiver dimensions and lightweight construction make the bodypacks practical for performers who need reliable monitoring during extended rehearsals and live shows.
Designed for professional live sound, the EW IEM G4-TWIN-A includes the accessories needed to establish a two-person wireless monitoring system, including a rod antenna, GA 3 rackmount set, transmitter power supply, and four AA batteries. Its durable transmitter enclosure, compact receivers, flexible frequency coordination, and professional audio connectivity make it suitable for touring musicians, live bands, singers, theater productions, houses of worship, and broadcast-related monitoring applications. By combining two wireless receivers with one stereo transmitter, the system provides a practical way to equip two performers with personal in-ear monitoring while maintaining centralized audio routing and wireless frequency management. Operating frequencies must be checked for local availability and regulatory compliance before use.
| App Control | Compatible with Sennheiser Wireless Systems Manager software |
| Control Interfaces | Backlit OLED display on transmitter, backlit LCD on receivers, infrared synchronization |
| Battery Life | Approximately 4-6 hours depending on volume hours |
| Connectivity Protocols | Analog UHF |
| Frequency Response | 25 Hz - 15 kHz Hz |
| Impedance | 32 Ohms Ohms |
| IP Rating | 14°F to 131°F (-10°C to +55°C) °C |
| Power Consumption | 350 mA (transmitter max current) mA |
| Voltage Range | 100-240V AC, 50/60Hz V AC |
| Wattage | 10 mW, 30 mW, 50 mW selectable mW |
| Brand | Sennheiser |
| Name | Sennheiser EW IEM G4-TWIN-A |
| Primary Category | Dual-Receiver Wireless In-Ear Monitor System |
| Dimensions | 7.95 x 8.35 x 1.69 in (W x D x H) inches |
| Included Accessories | 2 x IE 4 earphones, 4 x AA batteries, rod antenna, GA 3 rackmount set, transmitter power supply, quick guide, safety guide, manufacturer declaration sheet |
| Mounting Options | Half-rack metal enclosure with GA 3 rackmount kit included |
| Transportability | Compact bodypack receivers, rugged metal transmitter enclosure |
| Weight | 2.16 lb (transmitter), 4.41 oz (receiver with batteries) lbs |
| Warranty Length | Not specified years |
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I used this item as a wireless audio transmitter for my JBL Eon One MK2 speakers to create a full wireless system. It worked well with the speakers around 100 feet away. I can't speak about any other distances. My only issue is that after a while (5-15 minutes) the system would start become susceptible to interference caused by cell phones that pass in direct line of sight. This happened regardless of the frequency selected. The only solution was to ensure that the antennas for the transmitter and the receiver were far above the level where people were operating cell phones. So, if in a situation where people are passing at your level and above you on another floor there was no escape from the interference.
I have four of these now and the product works well. It's networked and very intuitive, with an Engineer Mode for fine-tuning. The only reason it gets 4 stars is that Sennheiser made the stupid decision to make the On light red right underneath the low-battery indicator. I've had several bands tell me their battery was low when it's really not. Stupid, but still a great product. Mine have been dropped several times by several artists and they are still fully functional.
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