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Sennheiser EW-D SKM-S Handheld Transmitter for Evolution Wireless Digital - Range S1-7

Manufacturer: Sennheiser
SKU: 508793
Rugged and versatile handheld transmitter for use with Evolution Wireless Digital receivers, compatible with a wide range of Sennheiser and Neumann microphone capsules.
Availability: Backorder - Contact for ETA
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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. This handheld transmitter is compatible with a wide range of Sennheiser and Neumann microphone capsules.


  • 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


  • Frequency range: 606.2 - 662 MHz
  • THD, total harmonic distortion: ≤ -60 dB for 1 kHz @ -3 dBfs input level
  • Weight: approx. 304 g (incl. MMD 835 microphone module); approx. 195 g (without microphone module)
  • Operating temperature: -10 °C - +55 °C (14 °F - 131 °F)
  • Power supply: 2 AA batteries 1.5 V (alkaline manganese) or BA 70 rechargeable battery pack
  • Current consumption: < 300 mA
  • Input voltage range: 2.0 - 4.35 V
  • Transmission power: Audio link: 10 mW; ERP (Range Y1-3): 12 mW ERP; BLE: max. 10 mW EIRP
  • Operating relative humidity: 5 - 95 % (non-condensing)
  • Audio frequency response: 20 Hz - 20 kHz (-3 dB) @ 3 dBfs
  • Dimensions: 50 x 268 mm (incl. MMD 835 microphone module); 40 x 200 mm (without microphone module)

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