Sennheiser EW-D SK BASE SET (S1-7) Receiver + Bodypack Transmitter

The Sennheiser EW-D SK BASE SET (S1-7) is a digital wireless system that includes the EW-D EM receiver and the EW-D SK bodypack transmitter, supplied without a lapel or headset microphone.
This makes it ideal for users who already own compatible microphones or who want to pair the system with their preferred lavalier, headset, or instrument cable.
Operating in the 606.2–662 MHz band, it provides 24-bit digital audio, excellent RF stability, low latency, and professional-grade performance.

Key Features

• Frequency range: 606.2–662 MHz

• Digital UHF transmission with 24-bit audio

• Very low latency (approx. 1.9 ms)

• Works with any Sennheiser locking 3.5 mm lavalier, headset, or instrument cable

• Up to 90 compatible channels depending on RF environment

• 56 MHz switching bandwidth

• AES 256-bit encrypted transmission

• Automatic frequency coordination via Sennheiser Smart Assist App

• Metal housing on transmitter and receiver

• OLED displays for easy monitoring and control

Technical Specifications

EW-D EM Receiver:

• Audio outputs: Balanced XLR + unbalanced 6.3 mm jack

• Frequency response: 20 Hz – 20 kHz

• Antenna connections: 2 × BNC

EW-D SK Bodypack Transmitter:

• Input: Locking 3.5 mm mini-jack

• RF output power: Up to 10 mW

• Power: BA 70 rechargeable battery or 2 × AA batteries

• Battery runtime: Up to 8 hours (BA 70)