Sennheiser SKM 100 G4 Handheld Wireless Microphone Transmitter

The Sennheiser 509758 is a handheld transmitter that forms the heart of a dependable wireless microphone setup. Built for the evolution G4 series, it partners seamlessly with the EM 100 G4 receiver and even works with earlier Evolution systems, so owners of G1, G2, or G3 gear can upgrade without replacing everything.

Engineers and performers appreciate its metal housing, which can handle the knocks of touring, rentals, and busy houses of worship. Two AA batteries deliver up to eight hours of operating time, giving a full day of rehearsals or several sets on stage without a battery swap.

The capsule mount follows Sennheiser’s interchangeable standard, letting you add the dynamic or condenser capsule that best fits a lead vocalist, a spoken-word presenter, or a corporate trainer. Because the transmitter ships without a capsule, audio teams can tailor the pickup pattern and tonal character to each event.

Setup is straightforward. A single IR sync button pairs the transmitter with a receiver channel in seconds, and the backlit LCD shows battery life, frequency, and RF strength for quick checks in dim venues. Adjustable gain helps match levels, whether you are capturing delicate speech or a singer with powerful projection.

With a transmission range that reaches up to 330 feet, the SKM 100 G4 suits theater stages, outdoor festivals, classrooms, or conference rooms where freedom of movement is essential. Rental houses and production crews often keep several on hand because they integrate smoothly into multi-channel rigs and maintain stable links even in crowded RF environments.

• Handheld transmitter that pairs with the EM 100 G4 receiver
• Runs up to 8 hours on two AA batteries
• Reliable transmission range up to 330 feet (100 meters)
• Adjustable gain; unit has no mute switch
• Backlit LCD shows battery status, channel, and signal strength
• Interchangeable capsule mount; capsule is not included
• Compatible with Evolution Series G1 through G4 receivers
• Metal housing designed for everyday stage and field use