Product Features
  • SKM D1 Handheld Transmitter & e845 Head
  • EM D1 Rackmount Digital Receiver
  • Uses Licence-Free 2.4 GHz Band
  • Up to 15 Channels
  • Automatic Frequency Management
Our Price $909.00

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The ew D1-845-S from Sennheiser is a digital wireless vocal system that features an EM D1 rackmount digital receiver and an SKM D1 handheld microphone transmitter with an e845 super-cardioid capsule. Ideal for live stage use, this professional system can accommodate a plethora of vocal applications, such as musical performances and lectures.

The ew D1-845-S is designed for reliability, sound quality, and user-friendliness. It can support up to 15 D1 systems simultaneously under optimal conditions, and it operates in the licence-free 2.4 GHz band.

Key Features

  • Transmitter features mute-switch for convenience on-stage
  • Up to 15 compatible channels (under optimal conditions) in licence-free 2.4 GHz band
  • Automatic frequency management
  • Prevents interference: Intelligent channel back-up allows co-existence with Wi-Fi & Bluetooth
  • Built-in equaliser, de-esser and automatic gain control for fine tuning
  • iOS app for remote control and monitoring of the system
  • Sturdy metal housing
  • Includes case for safe storage and transport
Frequency Response20 to 20,000 Hz
Dynamic Range> 135 dB (A)
Total Harmonic Distortion (THD)Typ. < 0.1 %
Audio Sampling24-bit / 48 kHz
Signal-to-Noise Ratio≥ 105 dB (A)
RF Frequency Range2,400 to 2,483.5 MHz
ModulationGFSK with back channel
Transmission MethodTDMA, time diversity, frequency diversity, fast switching antenna diversity
Latency3.9 ms
Audio CodecAPT-X Live
Operating Temperature-10 to +55°C
Storage Temperature-20 to +70°C (The temperature range is influenced by the battery characteristics)
Frequency Response50 to 20,000 Hz
RF Output PowerAdaptive, up to 100 mW (country-specific)
Input SensitivityAutomatic sensitivity adjustment
Battery2 x AA size battery (1.5 V)
Operating Time: typical 6 hours
Optional AccessoriesAccupack: BA 10 (Li-Ion, 3.7 V)
Operating Time: typical 11 hours
Weight280 g, incl. microphone head
LatencyMulti-frequency targets
RF Sensitivity<- 90 dBm
Audio OutputMic/line level switch -24 dB/0 dB, XLR, balanced max +18 dBu, jack, unbalanced/balanced max +12 dBu/max +18 dBu
Low-Cut Filter-3 dB at 120 Hz
Equaliser7-band graphic equaliser
Automatic Gain ControlCompression/expansion with automatic make-up gain function
ConnectionXLR / 1/4" (6.3 mm) jack
Antenna Connector2 x Rev-SMA
Network ProtocolMedia Control Protocol, TCP/IP IPv4 (DHCP, Manual)/IPv6
Power Supply12 VDC hollow jack
Current Consumption350 mA
Weight824 g
Sennheiser EW D1 845-S Digital Wireless Vocal Set with e845 Super Cardioid Handheld Transmitter
EW D1-845S
EW D1-845S
RM Product #:
System Type:
Handheld System