EW-DX SK / SKM-S Set – Base Set
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EW-DX base set consisting of 1 x EW-DX SKM-S (handheld with mute switch), 1 x EW-DX SK (wireless bodypack transmitter), 1 x EW-DX EM 2 rackmout receiver (2 channels) and 2 x BA 70 rechargeable batteries. Microphone capsules are sold separately.
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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.
Flexibility for Those Who Want to Choose the Capsule That Best Meets Their Needs.
Base Set for digital wireless applications featuring 2-channel receiver, handheld and bodypack transmitter for use with a wide range of Evolution Wireless Digital microphone heads.

  • 134 dB input dynamic range - no need to set gain on your wireless transmitters at all, thanks to proprietary Sennheiser Performance Audio Codec (SePAC)

  • AutoScan-feature quickly scans your environment and deploys frequencies with equidistant channel spacing - even without RF knowledge

  • Network enabled for expanded remote control with Sennheiser Control Cockpit, Wireless System Manager (WSM - Available in mid-2023) and 3rd party media control systems via plug-in

  • Remote control via Smart Assist App over Bluetooth® Low Energy (BLE) at distances up to 25 meters (Available in late 2023)

  • Secure transmission of confidential content using AES 256 encryption

  • Up to 12 hours of operation time with rechargeable lithium ion battery BA 70 (included)

  • Function buttons - control all the transmitter settings directly from the handheld and bodypack including button lock function

  • Persistent E-Ink display for "always on" information - parameters visible on screen even when taking out batteries

  • Equidistant channel spacing to easily allocate intermodulation-free channels: Standard Mode with 600 kHz spacing for up to 146 channels; Link Density (LD) Mode with 300 kHz spacing for up to 293 channels

  • Up to 88 MHz switching bandwidth

  • Low latency of 1.9 ms wireless transmission thanks to proprietary Sennheiser Performance Audio Codec (SePAC)

  • Digital audio trim

  • Transmitters with charging contacts for in-device charging with CHG 70N charger (sold separately)

  • Sennheiser Standard Capsule Interface - compatible with a wide range of Sennheiser and Neumann capsules (sold separately)

  • Compatible with a wide range of Sennheiser lavalier and headset microphones with 3.5 mm jack plug connection (sold separately)

  • Versatile charging options optionally available: CHG 70 N, L 70 USB, LM 6070 Module for L 6000 full rack charging station (Availability in 2023)

  • Worldwide usage (specific frequencies subject to local RF regulations)

How To Guide

How To Guide

Need help? Check out our step-by-step How To Guide. more

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Ready to elevate and amplify your sound? Contact us today to learn more about EW-DX, our latest and most innovative wireless microphone system.

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What's in the Box
  • EW-DX EM 2 rack receiver
  • EW-DX SKM-S handheld transmitter
  • EW-DX SK bodypack transmitter
  • EW-D Power Supply with country adapters
  • 2 BA 70 rechargeable battery packs
  • MZQ 1 microphone clamp
  • 2 rod antennas
  • GA 3 rack mount Kit
  • 4 rubber feet
Contact Us
Product Support Phone



  • Spec Sheets
    • Product specification - EW-DX SK-SKM-S BASE SET (400 KB) Download

  • Quick Guides
    • Quick Guide - EW-DX EM 2 | EW-DX SKM(-S) | EW-DX SK (3-PIN) (3.4 MB) Download

    • Sennheiser Control Cockpit - How to Guide (440 KB) Download

  • Safety instructions and regulatory information
    • Safety instructions - EW-DX EM 2 | EW-DX SKM(-S) | EW-D SK (3-PIN) (590 KB) Download

    • Specifications & Manufacturer declarations - EW-DX EM 2 | EW-DX SKM(-S) | EW-D SK (3-PIN) (2.5 MB) Download

  • Instruction Manual & Frequently asked questions
    • Instruction manual and frequently asked questions - Evolution Wireless Digital (EW-D | EW-DX | EW-DP) (HTML) Download

    • Instruction manual and frequently asked questions - Evolution Wireless Digital (EW-D | EW-DX | EW-DP) (PDF) (24 MB) Download

      This PDF document is a PDF export of an interactive manual in HTML format. When displayed in PDF format, it is possible that not all content and interactive elements in the HTML instructions are included, as these cannot be displayed in PDF format. We recommend using the complete and interactive HTML instructions. You can find these in the Sennheiser Documentation App, which is available free of charge for iOS and Android. Alternatively, the HTML instructions are also available in this download area.

  • 3rd Party Integration
    • Sennheiser Sound Control Protocol - EW-DX EM 2 (Firmware 1.1.3) (510 KB) Download

    • Crestron Plugin - EW-DX EM 2 (2.1 MB) Download

    • Q-SYS Plugin - EW-DX EM 2 (770 KB) Download

  • Firmware Updates
    • Firmware Update - EW-DX Version 1.2.13 (31 MB) Download

  • Release Notes
    • Firmware Release Notes - EW-DX (110 KB) Download

  • Digital Brochures
    • 2022 07 EW DX Product Brochure Screen EN (5.3 MB) Download

  • Frequency Sheets
    • Sennheiser Frequency Ranges ITU Region 1 Europa (57 KB) Download

    • Frequency presets - EW-DX Range V5-7 (941.700 - 951.800 MHz & 953.050 - 956.050 MHz & 956.650 - 959.650 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range S4-10 (630-693.8 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range U1/5 (823.2-831.8 MHz & 863.2-864.8 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range R1-9 (520-607.8 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range Q1-9 (470.2-550 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range S2-10 (614.2-693.8 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range S1-10 (606.2-693.8 MHz) (86 KB) Download

    • Frequency presets - EW-DX Range Y1-3 (1785.200 - 1799.800 MHz) (110 KB) Download

    • Frequency presets - EW-DX Range V3-4 (925.2-937.3 MHz) (110 KB) Download

WARNING (for California residents only): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects and other reproductive harm. For more information go to: www.p65warnings.ca.gov.

Most users do not need a license to operate a wireless microphone system. Nevertheless, operating a microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones