Sennheiser EW-D CI1 Set Digital Wireless Instrument System
All-in-one digital wireless instrument set for those who play the guitar.
Versatile and feature-rich digital wireless system for those who sing, speak or play instruments that allows for seamless product pairing and management via the EW-D Smart Assist App. With a metal housing, the robust bodypack transmitter and included CI 1 instrument cable suit perfectly for daily use on stage.
Features
- Digital transmission operating in the UHF spectrum greatly enhances range, reliability and scalability
- Smart Assist App connects via Bluetooth Low Energy for a streamlined setup and operation at a distance
- Auto scan creates reliable connections with minimal time and effort
- 134 dB audio input dynamic range eliminates need for sensitivity adjustments and preserves every detail
- Elimination of intermodulation enables channels to be placed in an equidistant tuning grid 600 kHz apart
- 56 MHz of tuning bandwidth and equidistant spacing enables up to 90 channels
- 2,240 selectable frequencies allow for fine tuning
- Lithium-Ion battery pack (sold separately) delivers up to 12 hours of operation (up to 8 hours of operation with 2x provided AA batteries)
What’s In The Box
EW‑D True diversity receiver
EW‑D bodypack transmitter
CI1 instrument cable (1/4″)
2 × detachable antennas
Power supply with adapters
Rackmount kit and rubber feet
Batteries
Quick start guide
System Overview
System type: Sennheiser Evolution Wireless Digital (EW‑D)
Configuration: True diversity digital receiver + bodypack transmitter
Use cases: Wireless instrument connection (guitar, bass, keyboard), stage use, small venues
Wireless range: Up to approximately 100 m (328 ft) line‑of‑sight
Latency: Around 1.9 ms (very low delay)
Dynamic range: ~134 dB
Selectable channels: Up to about 2240 presets on a fine UHF grid
Control: Bluetooth Smart Assist for mobile control and monitoring
Receiver (EM)
Receiver type: True diversity tabletop/rack unit (half‑rack width)
Mounting: Rackmount hardware included (half‑rack)
Antennas: 2 detachable BNC external antennas
Audio outputs:
• Balanced XLR
• Unbalanced 1/4″ TRSGain range: About ‑3 dB to +42 dB in 3 dB steps
Audio frequency response: 20 Hz to 20 kHz
Output levels:
• Balanced XLR: approx. +18 dBu
• Unbalanced TRS: approx. +12 dB
Transmitter (Bodypack)
Transmitter type: EW‑D bodypack
Input: Locking 3.5 mm TRS jack for instrument or mic/line signals
Cable included: CI1 instrument cable for guitar/bass
RF output power: ~10 mW (standard)
Power source: 2 × AA batteries (alkaline)
Battery life: ~8 hours with alkaline, up to ~12 hours with optional rechargeable pack
Mute switch: On bodypack
Audio Performance
Audio frequency response: 20 Hz – 20 kHz
Sample resolution: 24‑bit digital audio quality
Dynamic range: ~134 dB
Latency: Approx. 1.9 ms
Distortion: Very low (within digital system specification)
Wireless & Frequency Info
Modulation: Digital transmission (wideband, robust against interference)
Frequency selection: Automatic scanning and selectable channels
Frequency ranges: Varies by regional model — typical EW‑D bands can include ranges around 470–526 MHz, 520–576 MHz, etc.
Bluetooth: BLE for Smart Assist app control and syncing
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