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Sennheiser

Sennheiser EW-DX SKM (Q1-9) Digital Wireless Handheld Transmitter with Mute Switch, No Mic Capsule (Q1-9: 470 to 550 MHz)

$499.00

Digital wireless handheld transmitter without switch compatible with Evolution Wireless Digital systems. Rugged metal housing with standard capsule interface for a wide range of Sennheiser and Neumann microphone modules. Up to 12 hours of runtime, persistent E-Ink display and charging contacts for in-device charging. 

Sennheiser EW-DX simplifies your professional workflow by utilizing refined technologies and decades of research to deliver a digital UHF system that can be scaled with ease. With its advanced feature set and hardware options, classrooms, corporate campuses, and live productions benefit from a network-ready system that is designed to integrate seamlessly. The system quickly assesses your environment and uses equidistant channel spacing to deploy frequencies while tools like Sennheiser’s Control Cockpit, Wireless Systems Manager, and Smart Assist App allow you to monitor your system remotely. In-device charging, 12-hour battery operation, and switching bandwidth up to 88 MHz are only a few more of the many features that make EW-DX the right tool for the job.

View Product Features

  • 134 dB of Dynamic Range, 24-Bit Audio
  • 3200 Frequencies on Equidistant Grid
  • Mute Switch, e-Ink Display
  • Durable Metal Housing
  • Set Up/Operate from Receiver or Phone
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About the Sennheiser EW-DX SKM (Q1-9) Digital Wireless Handheld Transmitter with Mute Switch, No Mic Capsule (Q1-9: 470 to 550 MHz)

The Sennheiser EW-DX SKM is a state-of-the-art digital wireless handheld transmitter representing the cutting edge of the EW-DX series, designed for the most demanding professional audio applications in touring, broadcast, and premium installed sound. Operating within the Q1-9 frequency range (470 to 550 MHz), this transmitter leverages 24-bit/48 kHz digital audio transmission to deliver pristine, uncompromised sound quality with enhanced robustness against interference. This specific model is supplied without an integrated microphone capsule, featuring instead a standard threaded connector that allows users to attach their choice of Sennheiser or third-party microphone capsules, such as the MM 435 or Neumann KK 204/205 series. This modular design provides ultimate flexibility for audio engineers and performers to tailor the vocal or instrument sound to the exact requirements of the production, from the warm detail of a condenser to the rugged feedback rejection of a dynamic.

Engineered with a robust, all-metal body, the EW-DX SKM transmitter is built to withstand the rigors of nightly touring while providing an ergonomic and balanced feel in the hand. Its advanced feature set includes a high-resolution OLED display that clearly shows frequency, battery status, audio levels, and system settings. A prominent, tactile mute switch is integrated into the body for immediate, reliable muting during performances. The transmitter utilizes Sennheiser's sophisticated digital encryption and employs an adaptive frequency hopping spread spectrum (AFHSS) mechanism, which continuously scans the RF environment and dynamically switches to the clearest available frequency within its band. This technology, combined with an extremely low latency of less than 2 milliseconds, ensures a rock-solid, secure, and transparent wireless link that feels as immediate and reliable as a wired connection.

Power and system integration are key strengths of the EW-DX platform. The transmitter is powered by a rechargeable BA 70 lithium-ion battery pack, offering extended runtime and compatibility with Sennheiser's intelligent networked charging systems like the CHG 70N for centralized management and monitoring. The unit supports remote control and monitoring via Sennheiser's Control Cockpit software when used with the compatible EW-DX receiver, allowing for adjustment of parameters like gain, mute, and frequency from a computer or tablet. By combining digital audio fidelity, intelligent RF management, robust construction, and a capsule-agnostic design, the Sennheiser EW-DX SKM transmitter provides a future-proof, professional-grade foundation for any critical wireless microphone application where sound quality, reliability, and flexibility are paramount.

Key Features

  • 134 dB of Dynamic Range, 24-Bit Audio
  • 3200 Frequencies on Equidistant Grid
  • Mute Switch, e-Ink Display
  • Durable Metal Housing
  • Set Up/Operate from Receiver or Phone

Sennheiser EW-DX SKM (Q1-9) Digital Wireless Handheld Transmitter with Mute Switch, No Mic Capsule (Q1-9: 470 to 550 MHz) Specs

System & Frequency
Transmission Type
Digital UHF
Frequency Range
Q1-9 Band: 470 - 550 MHz
RF & Digital Processing
RF Bandwidth
80 MHz
Modulation
Adaptive Frequency Hopping Spread Spectrum (AFHSS)
Latency
<2 ms (end-to-end system latency)
Encryption
24-bit Digital Encryption
RF Power Output
Programmable, up to 50 mW
Audio Specifications
Audio Resolution
24-bit / 48 kHz
Dynamic Range
>120 dB (A-weighted)
THD+N
<0.1% (@ 1 kHz)
Maximum Input Level
+18 dBV
Gain Control
Remote or Local, -12 dB to +48 dB
Capsule Connector
Standard Thread (for MM 435, Neumann KK, etc.)
Power & Battery
Battery Type
Rechargeable BA 70 Lithium-Ion Pack
Typical Runtime
>8 hours (full performance mode)
Charging
Via compatible charger (e.g., CHG 70N)
Battery Indication
Precise % on OLED
Controls & Display
Display
High-Resolution OLED
Mute Switch
Integrated Tactile Switch
Controls
Multi-function Rotary Encoder
Infrared Sync
Yes (for pairing)
Physical & Connectivity
Housing Material
Metal
Connector Locking
Threaded Capsule Ring
Dimensions (Length x Body Dia.)
~260 mm x ~50 mm (without capsule)
Weight (without battery/capsule)
~390 g
Operating Temperature
0°C to 45°C
Networking & Control
Software Integration
Sennheiser Control Cockpit
Remote Control
Gain, Mute, Frequency, Power via Software
Network Protocol
Proprietary via EW-DX Receiver

Key Features

  • 134 dB of Dynamic Range, 24-Bit Audio
  • 3200 Frequencies on Equidistant Grid
  • Mute Switch, e-Ink Display
  • Durable Metal Housing
  • Set Up/Operate from Receiver or Phone
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