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Sennheiser EW-D CI1 Wireless Instrument Set (U1/5)
Compatible with guitars, basses, and other instruments using the included CI1 instrument cable
Digital UHF transmission helps eliminate noise, interference, and signal dropouts
56 MHz bandwidth supports up to 90 simultaneous channels
Auto Scan function for fast, simple channel selection
25 kHz tuning steps (100 kHz for 1.8 GHz sets) for precise frequency adjustment
Equidistant Spacing technology reduces intermodulation issues
Reliable wireless performance in crowded RF environments
Bluetooth sync for quick and easy system setup
Adjust parameters directly from the receiver, including gain, battery status, and system monitoring
Smart Assist app control for Android and iOS devices
Secure 3.5 mm locking connector for a stable instrument connection
Up to 8 hours battery life using 2 × AA batteries
Up to 12 hours battery life with optional rechargeable Li-Ion battery pack
On-board mute switch for silent instrument changes
Over 300 ft wireless range with 10 mW RF output power
Ultra-low latency (1.9 ms) for responsive performance
Durable all-metal housing built for touring and live use
½-rack size for easy installation in standard 19” racks
Optional colour-coding kits for organising multiple wireless systems
Compatible with a range of Sennheiser lavalier and headset microphones
What’s Included
1 × Sennheiser EW-D EM Rack Receiver
1 × Sennheiser EW-D SK Bodypack Transmitter
1 × Sennheiser CI 1 Instrument Cable
2 × Rod Antennas
1 × Power Supply with Country Adapters
1 × Rackmount Set
4 × Rubber Feet
1 × Quick Guide
1 × Safety Guide
1 × Manufacturer Declaration Sheet
The Sennheiser EW-D CI1 Wireless Instrument Set is designed to help performers and engineers achieve reliable, high-quality wireless sound with minimal setup. Its streamlined design makes it ideal for professional instrumentalists performing at music venues, houses of worship, and live events.
With digital UHF transmission, the system delivers clear, stable audio with a wireless range of up to 300 ft, an extended 56 MHz bandwidth, and scalability for up to 90 channels. This ensures reliable operation even in busy wireless environments, reducing interference and signal dropouts.
Each EW-D SK bodypack transmitter is engineered to prevent intermodulation, allowing multiple transmitters to operate together without overload. Simply connect your instrument using the included CI1 instrument cable, and enjoy up to 8 hours of operation with AA batteries or up to 12 hours with an optional lithium-ion battery pack.
The EW-D EM receiver makes system management simple, letting you adjust gain staging, monitor performance, and manage settings directly from the unit. For added convenience, you can also control the system remotely using the Smart Assist app, giving you full wireless management from anywhere in the room, so you can focus on the performance instead of the setup.
System
Audio Link Frequency Ranges: U1/5 823.2 – 831.8 MHz & 863.2 – 864.8 MHz
Bluetooth® Low Energy (BLE) Frequency Range: 2402 – 2480 MHz
Audio Frequency Response: 20 Hz – 20 kHz (-3 dB) @ 3 dBfs
Total Harmonic Distortion: -60 dB (1 kHz @ -3 dBfs input level)
Operating Temperature: -10 °C to +55 °C (14 °F – 131 °F)
Relative Humidity: 5 – 95% (non-condensing)
EW-D EM Rack Receiver
Input Voltage: 11 – 13 V DC
Input Current: 300 mA
Transmit Power (BLE): Max. 10 mW EIRP
Audio Output Power: 18 dBu max.
Dimensions: 212 × 44 × 189 mm
Weight: Approx. 1000 g (without antennas and power supply)
EW-D SK Bodypack Transmitter
Input Voltage: 2.0 – 4.35 V
Input Current: < 300 mA
Power Supply: 2 × AA 1.5 V batteries or BA 70 rechargeable battery pack
Occupied Bandwidth: 200 kHz
Transmit Power (Audio Link): 10 mW ERP (Range Y1-3: 12 mW ERP)
Transmit Power (BLE): Max. 10 mW EIRP
Dimensions: 63 × 80 × 20 mm (without antenna)
Weight: Approx. 120 g (without batteries)
Other
Packaging Dimensions: 405 × 350 × 73 mm
Weight (Full Set): 2.8 kg