Description
Engineered for demanding professional environments, the Sennheiser EW-DX SK 3-PIN (U1/5) is a digital UHF bodypack transmitter built to integrate seamlessly with the Evolution Wireless Digital ecosystem. A rugged metal housing, persistent E-Ink display and in-device charging contacts deliver durability and day-to-day convenience. The outstanding 134 dB input dynamic range—powered by Sennheiser’s Performance Audio Codec (SePAC)—eliminates traditional gain staging, streamlining setup for presenters and performers. With up to 12 hours of operation from the BA 70 rechargeable battery (sold separately) and a fixed 10 mW RF output providing up to 100 m of range, it excels in classrooms, corporate spaces and live productions. The 3-pin locking connector ensures broad compatibility with Sennheiser lavalier and headset microphones. When paired with EW-DX receivers, features such as AutoScan, equidistant channel spacing, and remote monitoring via Sennheiser Control Cockpit, Wireless Systems Manager, and the Smart Assist App simplify deployment across scalable, network-ready systems. Choose the U1/5 band variant to suit local RF regulations and site requirements.
Key Features:
- Set-and-forget input headroom:
134 dB input dynamic range via SePAC removes manual gain setting, keeping speech and vocals clear even through wide-ranging level changes. - Always-on visibility and charging:
Persistent E-Ink screen shows status even with power removed, while charging contacts enable drop-in, in-device charging with the CHG 70N. - Professional control and audio tools:
Programmable RF/AF mute, digital trim, test tone, low-cut options, and cable emulation refine setups for instruments, theatre, and corporate AV.
Specifications:
- Article Number: 509405
- Model: EW-DX SK 3-PIN (U1/5)
- Transmitter Type: Digital UHF bodypack
- Connector: 3-pin locking (Sennheiser standard)
- Compatibility: Evolution Wireless Digital family (EW-D / EW-DX)
- Input Dynamic Range: 134 dB (SePAC)
- RF Output Power: 10 mW (fixed)
- Operating Range: Up to 100 m / 328 ft (environment dependent)
- Latency: 1.9 ms
- Runtime: Up to 12 hours with BA 70 Li-ion (sold separately)
- Charging: In-device via contacts; CHG 70N compatible; optional L 70 USB, LM 6070 for L 6000
- Display: Persistent E-Ink
- Controls: Function buttons with lock; programmable mute (RF/AF/disabled)
- Audio Features: Digital audio trim; test tone; cable emulation; low-cut (Off/30/60/80/100/120 Hz)
- LED: Switchable on/off
- Housing: Metal
- Dimensions: 63 × 80 × 20 mm (without antenna)
- Weight: Approx. 120 g (without batteries)
- Usage: Worldwide; frequencies subject to local RF regulations
- System Integration: AutoScan, equidistant spacing and remote monitoring with compatible EW-DX receivers and Sennheiser software/apps

































