Sennheiser EW-D 835-S SET Digital Wireless Handheld Microphone System with MMD 835 Capsule (R4-9: 552 to 607 MHz) - 508752

Product Overview

The Sennheiser EW-D 835-S SET is a professional digital wireless handheld microphone system operating in the R4-9 frequency band (552–607 MHz), delivering broadcast-quality 24-bit audio with an industry-leading 134 dB dynamic range. Built on the same platform as Sennheiser's higher-end Digital 6000 and 9000 series, the EW-D democratizes professional wireless technology for performers, presenters, and educators at an accessible price. The system pairs the EW-D rackmount receiver with the 835-S handheld transmitter, featuring Sennheiser's MMD 835 cardioid dynamic microphone capsule — a stage-proven workhorse known for its clear, natural vocal reproduction and excellent feedback rejection. Bluetooth-assisted setup via the EW-D Smart Assist App makes channel coordination and system configuration faster and easier than ever before.

Product Description

The EW-D 835-S SET R4-9 brings professional digital wireless performance to stages, conference rooms, houses of worship, and lecture halls. Operating in the 552–607 MHz UHF spectrum, the system offers a wide 56 MHz tuning bandwidth with 2,240 selectable frequencies arranged on an equidistant 600 kHz grid, eliminating intermodulation products and enabling up to 90 simultaneous mic channels in a single venue. Unlike analog companding systems, the EW-D's true digital transmission preserves every nuance of the audio signal with no noise floor compromise, delivering 24-bit audio at just 1.9 ms latency.

The MMD 835 cardioid dynamic capsule is engineered for demanding live sound applications — its tight polar pattern reduces stage bleed and feedback while the robust metal grille withstands the rigors of touring. The handheld transmitter features a clearly accessible mute switch so presenters can step off-mic discreetly. Battery life reaches 8 hours on two AA alkalines or up to 12 hours with the optional Sennheiser rechargeable battery pack, keeping you powered through the longest event days. The EW-D rackmount receiver's intelligent switching diversity ensures a stable, dropout-free signal up to 328 feet (100 m) line of sight, and the front-panel auto-scan function quickly identifies the cleanest available frequency. Remote management via the EW-D Smart Assist App over Bluetooth Low Energy allows technicians to monitor battery levels, adjust gain, and switch channels without stepping foot on stage.

Key Features

• R4-9 Frequency Band (552–607 MHz) — Wide UHF band with 56 MHz tuning range and 2,240 selectable frequencies for clean channel availability in dense RF environments.
• 24-Bit Digital Audio, 134 dB Dynamic Range — Broadcast-grade fidelity with no companding artifacts; handles whispers to screaming vocals without sensitivity adjustments.
• MMD 835 Cardioid Dynamic Capsule — Stage-proven mic head with natural vocal character, strong feedback rejection, and rugged all-metal construction.
• Equidistant Tuning Grid — Channels spaced 600 kHz apart eliminate intermodulation; coordinate up to 90 simultaneous wireless channels in one band.
• 1.9 ms Ultra-Low Latency — Near-transparent delay for in-ear monitor users and broadcast applications where lip-sync is critical.
• Up to 328 ft (100 m) Operating Range — Intelligent switching diversity receiver maintains rock-solid RF performance across large venues.
• Bluetooth Smart Assist App — iOS/Android app enables remote setup, channel scanning, gain control, and battery monitoring from anywhere in the room.
• 8-Hour AA / 12-Hour Rechargeable Battery Life — Flexible power options keep performances going; optional BA 2015 rechargeable pack available separately.
• Auto-Scan Frequency Management — One-button scan identifies the cleanest available channel; sync transmitter with a single button press.
• Half-Rack Form Factor — Compact 19-inch rackmount receiver occupies just half a rack unit; pair two units side-by-side in a single rack space.
• Mute Switch on Transmitter — Talent can silence the mic discreetly without touching the gain structure at the receiver.

Typical Applications

• Live vocal performance on theatrical and concert stages
• Houses of worship — pastors, worship leaders, and guest speakers
• Corporate presentations, town halls, and keynote addresses
• University lecture halls and K-12 classrooms
• Conference and convention center AV systems
• Broadcast studio floor reporting and commentary
• Touring bands and regional touring productions

Technical Specifications

Frequently Asked Questions

Q: What is the R4-9 frequency band and is it legal to use in the US?

R4-9 covers 552–607 MHz, which falls within the licensed UHF TV band. In the US, this spectrum requires a Part 74 low-power auxiliary station license from the FCC for professional use. It is commonly used in licensed venues such as theaters, broadcast facilities, and houses of worship. Check your local regulations before purchase.

Q: How does the EW-D 835-S differ from other EW-D variants?

The EW-D 835-S SET ships with the MMD 835 cardioid dynamic capsule on the handheld transmitter. Other variants include the EW-D ME2 (lavalier) or SKM capsule heads. All variants share the same digital receiver platform and R4-9 band; only the transmitter and capsule differ.

Q: Can I run multiple EW-D systems simultaneously on the R4-9 band?

Yes. The equidistant tuning grid allows up to 90 simultaneous channels within the R4-9 band with no intermodulation products, making it ideal for large events and multi-mic installations.

Q: Does the EW-D 835-S work with the EW-D ASA antenna splitter?

Yes. The EW-D ASA active antenna splitter is designed specifically for the EW-D ecosystem and can distribute one pair of diversity antennas to up to four EW-D receivers, including the EW-D 835-S receiver. This simplifies antenna placement in multi-channel setups.

Q: What is included in the box?

The set includes the EW-D rackmount receiver, the SKM-S handheld transmitter with MMD 835 capsule, an AC/DC power adapter, two AA batteries, a rack mounting kit, and documentation.

Q: Can I use a rechargeable battery pack instead of AA batteries?

Yes. The optional Sennheiser BA 2015 rechargeable lithium-ion battery pack extends run time to approximately 12 hours and can be charged in the optional L 70 USB charger or in-body via a charging cradle system.

Q: How do I set up the EW-D 835-S using the Smart Assist App?

Download the free EW-D Smart Assist App on iOS or Android, enable Bluetooth on your device, and open the app near the receiver. The app auto-discovers the system, performs an RF scan, assigns the cleanest channel, and syncs the transmitter — all in under two minutes.

Q: What is the warranty on the EW-D 835-S SET?

Sennheiser provides a two-year limited warranty on the EW-D 835-S SET covering manufacturing defects. Extended coverage may be available through authorized dealers.