The Sennheiser EW-DP ME4 SET (R4-9) is a specialized, single-channel digital wireless microphone system meticulously designed for professional filmmaking, videography, and electronic news gathering (ENG) where superior audio isolation and camera-mounted operation are paramount. This complete solution uniquely pairs the compact, digital plug-on transmitter with the directional ME 4 cardioid lavalier microphone, operating within the R4-9 frequency band of 552 to 607 MHz. The system's fully digital transmission delivers broadcast-quality 24-bit/48 kHz audio with robust immunity to interference and negligible latency, ensuring perfect sync for critical video applications. The defining feature of this set is the ME 4's cardioid polar pattern, which provides a significant advantage over omnidirectional lavaliers by focusing on sound directly in front of the microphone while actively rejecting ambient noise, room reverberation, and wind from the sides and rear. This results in exceptionally clean, intimate, and intelligible audio, even in acoustically challenging or noisy locations.

The system's design emphasizes a streamlined, camera-centric workflow. The plug-on transmitter connects directly to the ME 4 microphone's cable via a secure locking 3.5mm connector, forming a compact unit that can be effortlessly mounted onto a camera's cold shoe or cage. This eliminates the need for a separate bodypack transmitter on the talent, simplifying setup and making it ideal for solo shooters or scenarios where equipping a subject with a transmitter is impractical. The included portable pocket receiver is equally mobile, featuring a clear display for monitoring and a clip for secure attachment. It provides both a 3.5mm output for direct camera connection and a balanced XLR output for connection to professional audio recorders or mixers, offering tremendous flexibility for different production setups.

Engineered for reliability in the field, the system includes a comprehensive accessory kit for the ME 4, featuring clothing clips, a tie mount, and a foam windshield. The plug-on transmitter is powered by a rechargeable lithium-ion battery for all-day operation, and the system features one-touch automatic frequency synchronization between the transmitter and receiver for quick, error-free setup. By combining the focused, noise-rejecting audio capture of the cardioid ME 4 lavalier with the wireless freedom and camera-mount convenience of the digital plug-on system, the Sennheiser EW-DP ME4 SET provides content creators, documentary filmmakers, and corporate videographers with a powerful, all-in-one tool for capturing studio-quality, isolated dialogue directly at the camera, regardless of the shooting environment.