Sennheiser EW-DX SKM (Q1-9) Digital Wireless Handheld Transmitter

Streamlined Professional Digital Handheld: Sennheiser EW-DX SKM (Q1-9)

The Sennheiser EW-DX SKM (Q1-9) digital handheld transmitter delivers uncompressed, crystal-clear 24-bit audio quality for demanding live stages, corporate auditoriums, houses of worship, and broadcast environments. Housed in a durable, all-metal body without a physical mute switch, this model ensures uninterrupted performance by eliminating the risk of accidental muting by vocalists or speakers during live events.

Operating in the clean Q1-9 Frequency Band (470.2 – 550.0 MHz), this handheld transmitter from our Sennheiser evolution wireless series catalog takes full advantage of Sennheiser’s equidistant frequency grid. By removing intermodulation distortion, the EW-DX system allows maximum channel density across crowded RF environments without needing complex frequency calculations.

Key Features & Pro-Level Advantages

• Standard Interchangeable Capsule Interface: Accepts a wide range of Sennheiser dynamic and condenser microphone heads (MMD, MMK, MM series) as well as premium Neumann KK series heads (capsule sold separately).
• Switchless Chassis Design: Smooth handle without an external mute switch prevents inadvertent audio dropouts caused by accidental button toggles on stage.
• 134 dB Input Dynamic Range: Powered by the Sennheiser Performance Audio Codec (SePAC), the transmitter accepts everything from soft whisper speech to high-SPL vocal beltings without clipping or requiring gain adjustments.
• Persistent “Always-On” E-Ink Display: Energy-efficient E-Ink screen continuously displays critical parameters (channel, frequency, name) even when the transmitter is powered off or batteries are removed.
• In-Device Battery Charging: Features external charging contacts that allow fast recharging while the optional BA 70 battery pack remains inside the transmitter (via Sennheiser CHG 70N or L 70 chargers).
• Extended Operational Battery Life: Delivers up to 12 hours of operation with the BA 70 rechargeable lithium-ion battery, or up to 8 hours using standard AA batteries.
• AES-256 Networked Encryption: When paired with an EW-DX receiver, transmitted audio streams are fully encrypted to safeguard sensitive corporate presentations and broadcast feeds.
• Rugged Metal Construction: Built to endure the daily rigors of touring, broadcast production, and high-traffic commercial installations.

Key Technical Specifications

• Device Type: Professional Digital Wireless Handheld Transmitter (Without Mute Switch)

• Frequency Range: Band Q1-9 (470.200 – 550.000 MHz)

• Capsule Mount: Sennheiser Standard Capsule Interface

• Input Dynamic Range: 134 dB

• Audio Frequency Response: 20 Hz – 20 kHz (-3 dB)

• Latency: 1.9 ms (with EW-DX Receiver)

• RF Output Power: 10 mW fixed

• Display: Persistent E-Ink Screen

• Power Supply Options: 1x BA 70 Li-Ion Rechargeable Pack or 2x AA Batteries (1.5 V)

• Operating Time: Up to 12 Hours (BA 70) / Up to 8 Hours (AA Batteries)

• Dimensions (w/o Capsule): Approx. 40 x 200 mm

• Weight (w/o Capsule): Approx. 195 g (without batteries)

Compatibility & System Integration

• Microphone Capsule Compatibility: Supports all Sennheiser interchangeable modules including dynamic (MMD 835, MMD 845, MMD 935, MMD 945, MM 435, MM 445), condenser (MME 865, MMK 965), and Neumann (KK 204, KK 205) heads.

• Receiver Integration: Wirelessly syncs with Sennheiser EW-DX EM 2, EW-DX EM 2 DANTE, and EW-DX EM 4 DANTE receivers operating in the Q1-9 frequency band.

• Charging Hardware: Compatible with CHG 70N network charging stations and L 70 USB chargers for direct in-device battery replenishment.

• Box Contents: 1x EW-DX SKM (Q1-9) handheld transmitter, 1x MZQ 1 microphone clamp, 2x AA batteries, and safety instructions.

• System Expansion: Browse compatible mic capsules, bodypack headsets, chargers, and receivers on our dedicated Sennheiser Brand Store.