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Sennheiser EW-D EM (R4-9) Single Channel Receiver Wireless Microphone System

Sennheiser EW-D EM (R4-9) Single Channel Receiver Wireless Microphone System

Stock: 10
Regular price $299.95 USD
Regular price Sale price $299.95 USD
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Sennheiser EW-D EM (R4-9) Single Channel Receiver Wireless Microphone System

Versatile and feature-rich digital wireless system for those who sing, speak or play instruments that allows for seamless product pairing and management via the EW-D Smart Assist App. Receive state-of-the-art live sound.

Raising the bar
Evolution Wireless Digital breaks the boundaries by providing more dynamic range than any wireless system currently on the market. Automatically securing the most reliable signal in a matter of seconds and scalable up 90 channels thanks to 56 MHz of tuning bandwidth, it’s easy to see why this wireless system is in a class of its own.

Equidistant Spacing – simpler than it sounds
Evolution Wireless Digital features an equidistant tuning grid previously only found in our flagship Digital 6000 and Digital 9000 wireless systems. Quality components with exceptional linearity eliminate intermodulation between EW-D transmitters, allowing frequencies to be equally spaced every 600 kHz alongside each other. This simplifies frequency coordination for wireless beginners and seasoned professionals alike, and also contributes to the system’s scalability and impressively high channel count.

An engineer in your pocket
The power of Bluetooth Low Energy puts full control right in the palm of your hand with the Sennheiser Smart Assist app. Take advantage of a remarkably fast automated setup, mobile access to every system setting and the added benefit of remote monitoring, all from the convenience of your Android or iOS device. Save time, save energy and perform with confidence.

  • Digital transmission operating in the UHF spectrum greatly enhances range, reliability and scalability
  • Smart Assist App connects via Bluetooth Low Energy for a streamlined setup and operation at a distance
  • Auto scan creates reliable connections with minimal time and effort
  • 134 dB audio input dynamic range eliminates need for sensitivity adjustments and preserves every detail
  • Elimination of intermodulation enables channels to be placed in an equidistant tuning grid 600 kHz apart
  • 56 MHz of tuning bandwidth and equidistant spacing enables up to 90 channels
  • 2,240 selectable frequencies allow for fine tuning
  • Lithium-Ion battery pack (sold separately) delivers up to 12 hours of operation (up to 8 hours of operation with 2x provided AA batteries)

Frequency range
1785.2 - 1799.8 MHz
925.2 - 937.3 MHz
823.2 - 831.8 MHz & 863.2 - 864.8 MHz
630 - 662 MHz
552 - 607.8 MHz
520 - 576 MHz
470.2 - 526 MHz
606.2 - 662 MHz
662 - 693.8 MHz
212 x 44 x 189 mm
THD, total harmonic distortion
≤ -60 dB for 1 kHz @ -3 dBfs input level
approx. 1000 g (without antennas and power supply)
Operating temperature
-10 °C - +55 °C (14 °F - 131 °F)
Current consumption
≤ 300 mA
Input voltage range
11 - 13 V ⎓
Transmission power
BLE: max. 10 mW EIRP
Operating relative humidity
5 - 95 % (non-condensing)
Audio frequency response
20 Hz - 20 kHz (-3 dB) @ 3 dBfs
Audio output level
18 dBu max.

What's in the Box:
EW-D EM rack receiver
2 rod antennas
power supply with country adapters
rackmount set
4 rubber feet
quick guide
safety guide
manufacturer declaration sheet

Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998.  We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications.   

Shipping --Pro packed & shipped  USPS, UPS or Freight Service. Contact us & pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed &  shipped. Processing times vary, 2-30  days

Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, & accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. 

What products can not be returned? - Clearance items, Custom Builds, items identified as non-returnable, discontinued items, used or NOS items,  electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids

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