Sennheiser 509778

Overview

The Sennheiser 509778 is a wireless handheld microphone system designed to deliver clear and reliable speech for presenters, trainers, and event staff in environments such as conference rooms, classrooms, and live venues. Operating within the AW+ band from 470 to 558 MHz, it offers an 88 MHz tuning range that supports up to 32 simultaneous channels, allowing for flexible multi-room or multi-presenter setups without interference. The system includes a durable metal-bodied SKM 300 G4-S handheld transmitter and a rackmount receiver with true diversity antenna technology to maintain a steady signal even when moving through crowds or across stages.

Key features

• 88 MHz tuning range that enables up to 32 compatible channels to operate simultaneously, reducing interference in complex setups
• True diversity receiver technology ensures consistent RF performance and stable audio transmission during movement
• Ethernet connectivity allows integration with Sennheiser Control Cockpit and Wireless Systems Manager software for remote frequency scanning, battery monitoring, and audio level adjustments
• Operating range of approximately 330 feet (100 meters) provides freedom of movement for speakers without signal dropouts
• Interchangeable microphone capsule mount lets users select the best capsule for voice type or room acoustics, with easy capsule swapping without replacing the transmitter
• Transmitter powered by two AA batteries or an optional rechargeable pack, delivering up to eight hours of continuous runtime for extended use
• Robust metal housing on the handheld transmitter designed to withstand daily use and travel demands
• Bright OLED display and intuitive jog wheel simplify frequency scanning and menu navigation, even in low-light conditions

Key specs

• Frequency band: AW+ (470 to 558 MHz)
• Tuning range: 88 MHz
• Maximum simultaneous channels: 32
• Operating range: up to 330 feet (100 meters)
• Transmitter power source: two AA batteries or optional rechargeable pack
• Transmitter runtime: up to 8 hours
• Receiver type: rackmount with true diversity antenna technology
• Display: bright OLED screen
• Connectivity: Ethernet port for network control

Connectivity and compatibility

The system’s Ethernet port enables seamless integration with Sennheiser’s Control Cockpit and Wireless Systems Manager software, allowing AV and IT professionals to remotely manage frequency settings, monitor battery status, and adjust audio levels from desktops or tablets. This network control capability is especially useful in complex installations or multi-room environments where centralized management is essential. The receiver’s true diversity antenna design ensures compatibility with a wide range of Sennheiser wireless components, supporting reliable signal reception across various setups.

Ideal uses and environments

This wireless microphone system is well suited to professional settings that demand clear speech and dependable wireless performance. It fits naturally into boardrooms, lecture halls, corporate roadshows, and training facilities where presenters need freedom of movement and consistent audio quality. The ability to support multiple channels simultaneously makes it a strong choice for multi-presenter events or venues with overlapping wireless systems. Its durable construction and straightforward operation also make it practical for frequent use and quick deployment in live event scenarios.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

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After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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