Sennheiser EW-D SKM-S BASE SET (U1/5)

The Sennheiser EW-D SKM-S Base Set (U1/5) is a versatile digital wireless system designed for performers, presenters and houses of worship who demand rock-solid reliability with minimal fuss. Combining a compact stationary receiver with a handheld transmitter compatible with a wide range of Evolution Wireless Digital microphone heads, it delivers pristine audio, effortless setup and scalable performance for everything from small stages to complex multi-channel rigs.

Operating in the UHF spectrum, EW-D takes advantage of Sennheiser’s latest digital transmission technology to offer impressive range, low latency and outstanding audio quality. With the EW-D Smart Assist app handling pairing, scanning and configuration via Bluetooth Low Energy, you can build and manage your wireless setup quickly and confidently, even in challenging RF environments.

Digital UHF Performance

At the heart of the EW-D SKM-S Base Set is a digital transmission system working in the UHF spectrum. This combination gives you the clarity and consistency of digital audio along with the proven reach and stability of UHF. The result is a system that holds its signal over distance, resists interference and delivers a clean, detailed sound that flatters both spoken word and vocals.

Effortless Setup with Smart Assist App

The EW-D Smart Assist app connects to the system using Bluetooth Low Energy, turning your phone or tablet into a powerful control centre. From there you can pair components, run auto scans, assign frequencies and monitor system status without touching the receiver. This drastically reduces setup time and makes it easy to adapt to last-minute changes on stage or in the venue.

Huge Dynamic Range and Low Latency

With a 134 dB audio input dynamic range, EW-D can comfortably handle everything from quiet speech to powerful singing without constant sensitivity tweaks. This wide headroom preserves nuance and prevents overload, so you can focus on the performance rather than gain staging. Latency is kept to a very low 1.9 ms, making the system feel immediate and natural for performers using in-ear monitors or working in tight, timing-critical setups.

Scalable Channel Management

EW-D eliminates intermodulation, allowing channels to be placed on an equidistant tuning grid spaced 600 kHz apart. Combined with 56 MHz of tuning bandwidth and 2,240 selectable frequencies, this makes it straightforward to deploy large multi-channel systems with up to 90 channels, all while maintaining reliable, interference-free operation. Whether you are expanding an existing rig or planning a new installation, EW-D offers the flexibility to grow.

• Digital UHF Transmission - Operating as a digital system in the UHF spectrum, EW-D offers extended range and robust reliability. You benefit from stable connections and clear, detailed sound, even in RF-crowded environments where analogue systems can struggle.
• Smart Assist App Control - The EW-D Smart Assist app connects via Bluetooth Low Energy for streamlined setup and remote operation. This lets you scan for free frequencies, pair devices and adjust settings from your mobile device, saving time and simplifying complex stage layouts.
• 134 dB Input Dynamic Range - With a massive 134 dB of input dynamic range, the system handles whisper-quiet speech through to powerful vocals without constant sensitivity adjustments. This preserves every detail and keeps your signal clean, reducing the risk of distortion or noise.
• Equidistant Tuning Grid and Wide Bandwidth - The elimination of intermodulation allows channels to be placed 600 kHz apart on an equidistant grid, supported by 56 MHz of tuning bandwidth and 2,240 selectable frequencies. This makes frequency planning straightforward and enables up to 90 channels to operate together for large productions.

System

• System Type: Digital wireless handheld system base set
• Transmission Type: Digital UHF
• Frequency Range: 823.200 - 831.800 MHz; 863.200 - 864.800 MHz (U1/5)
• Latency: 1.9 ms
• Tuning Bandwidth: 56 MHz
• Channel Spacing: 600 kHz equidistant grid
• Maximum Channels: Up to 90 channels (depending on region and setup)
• Selectable Frequencies: 2,240

Audio

• Audio Input Dynamic Range: 134 dB

Receiver

• Type: Stationary receiver
• Dimensions: 212 x 44 x 189 mm
• Connection: Wireless

Transmitter

• Type: Handheld transmitter
• Compatibility: For use with a wide range of Evolution Wireless Digital microphone heads
• Housing: Metal

Power

• Battery Options: 2 x AA batteries (included) or optional Lithium-Ion battery pack (sold separately)
• Battery Life: Up to 8 hours with AA batteries; up to 12 hours with Lithium-Ion battery pack