The Sennheiser EW-D SK BASE SET (R1) is a foundational digital wireless system package that provides the core electronic components for a bodypack-based wireless link, operating in the R1 sub-band within the 520 to 576 MHz range. This "Base Set" includes the EW-D SK digital bodypack transmitter and a compatible EW-D series single-channel rackmount receiver, but notably does not include a microphone. This configuration offers maximum flexibility, allowing the user to connect their choice of lavalier, headset, or instrument cable directly to the bodypack transmitter. It is ideal for those who already own high-quality microphones or require a specific model not included in a pre-packaged set.

The system delivers the full performance of the EW-DX platform: pristine 24-bit/48 kHz digital audio, ultra-low latency, Intelligent Antenna Diversity in the receiver, and 128-bit AES encryption. The bodypack features an OLED display for clear status monitoring and is powered by two AA batteries. This set is a perfect building block for system integrators, rental houses, and professionals who need the reliability and audio quality of Sennheiser's top-tier digital wireless technology but require the freedom to select their own microphone transducer for specialized applications in broadcast, theater, or live sound.