Sennheiser SKM 300 G4-S Wireless Handheld Transmitter with No Mic Capsule (AW+: 470 to 558 MHz)

The Sennheiser 509780 is the SKM 300 G4-S handheld wireless transmitter that anchors countless evolution wireless G4 setups. It arrives without a microphone capsule, letting engineers and performers choose exactly the sound they need, from the favored e 865 condenser head to other compatible options. An aluminum housing keeps the unit light yet sturdy, so it feels comfortable during long performances and stands up to the demands of touring or rental inventory.

The transmitter spans an 88 MHz tuning range with 3520 selectable frequencies, giving you room to maneuver when local RF conditions get crowded. Two AA batteries power the unit for up to eight hours, and the signal can cover distances as great as 330 feet, allowing speakers, vocalists, and moderators to roam freely on large stages or across event floors. A backlit LCD shows frequency, battery status, and mute position at a glance, while the mute switch itself can be locked to avoid accidental interruptions.

Because the SKM 300 G4-S works with evolution wireless G4 receivers and remains backward compatible with many earlier Evolution models, it is an easy drop-in upgrade for existing rigs. Houses of worship, corporate AV teams, educators, and live-sound providers will appreciate its flexible capsule options, strong RF performance, and straightforward menu system that keeps setup fast even when many channels are running side by side.

• Aluminum housing delivers durability while keeping weight low
• Tuning range of 88 MHz with 3520 selectable frequencies for dependable performance in busy RF environments
• Transmission range reaches up to 330 feet with line of sight
• Operates for up to eight hours on two standard AA batteries
• Backlit LCD offers quick access to frequency, battery, and mute information
• Mute switch with lock function prevents unwanted interruptions
• Compatible with evolution wireless G4 receivers and earlier Evolution systems
• Interchangeable capsule design accepts the e 865 and other optional Sennheiser heads