Rigorously engineered to meet the needs of demanding professionals working in business and educational settings, houses of worship, or on stage, the Sennheiser EW-DX 835-S SET is a dual-channel digital UHF wireless system with an impressive feature set designed to simplify your workflow while delivering uncompromising audio quality. This configuration includes a dual-channel, 1/2-rack receiver and two handheld transmitter/mics with mute switch and MMD 835 cardioid capsules.