The Sennheiser 509301 Evolution Wireless Digital (EW-D) system is a professional dual-channel digital wireless microphone system designed for reliable, high-performance audio capture in demanding live sound, presentation, and entertainment environments. This comprehensive set includes two fully independent receiver channels housed in a single 1U rack-mountable unit and two handheld wireless transmitters, each equipped with the premium MMD 835 dynamic vocal microphone capsule renowned for its clear, feedback-resistant sound tailored for vocal applications. Operating in a robust frequency range from 470 MHz to 550 MHz, the system provides flexibility to find clear channels and avoid interference in crowded RF environments, making it suitable for touring and multi-system events.

This digital system leverages advanced 24-bit/48 kHz audio resolution to deliver exceptional sound quality with a wide dynamic range and extremely low latency, ensuring pristine audio that remains perfectly synchronized with video sources. It incorporates intelligent features such as an automatic frequency scan and sync function, which allows the receiver to identify and suggest optimal frequencies, and then wirelessly transfer that setting to the paired transmitter with a single button press, drastically simplifying setup. The receivers feature a bright, high-contrast color display for clear monitoring of signal strength, battery status, and audio levels for both channels simultaneously. The handheld transmitters are built with durable metal construction and offer long operating times from two standard AA batteries, complemented by comprehensive control options for power, mute, and frequency selection.

Engineered for ease of use and professional reliability, the Sennheiser EW-D series represents a significant step forward in digital wireless technology, offering the audio fidelity and robust RF performance expected from professional-grade systems. This dual-channel set with handheld microphones is an ideal turnkey solution for vocalists, presenters, houses of worship, theaters, and any application requiring two robust, easy-to-manage wireless microphone channels for critical voice reinforcement.