Sennheiser EW-D SKM-S Digital Wireless Handheld Transmitter with Mute Switch, No Mic Capsule (R4-9: 552 to 607 MHz)

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EW-D SKM-S (R4-9)
3.20 (in)
3.00 (in)
13.70 (in)
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The Sennheiser EW-D SKM-S is a digital handheld wireless transmitter compatible with EW-D wireless receivers. It features an interchangeable microphone capsule design and is offered without a capsule included, so you can choose the one that best fits your application. Lightweight and comfortable for performers and presenters to hold, the transmitter features a rugged, all-metal housing well suited for daily use on stage.

The EW-D SKM-S is equipped with a mute button that can be locked out and overridden from the receiver or a mobile device during a performance. With a remarkable 134 dB dynamic range on its input, it can handle a wide variety of sound sources, including loud vocalists and performers, all without requiring any gain adjustment.

The unit quickly pairs with the receiver via Bluetooth at a distance up to 120', at the press of a button. What's more, the EW-D SKM-S utilizes an equidistant tuning grid that equally spaces 2240 frequencies across its wide 56 MHz bandwidth to prevent disruptive intermodulation issues that occur when multiple transmitters operate in confined spaces.

EW-D SKM-S is configured and controlled remotely via Bluetooth from either the receiver or the Smart Assist App installed on your iOS/Android phone/tablet—within a 120' range.

The transmitter provides up to 8 hours of operation on two AA batteries or 12 hours with a BA 70 lithium-ion rechargeable battery pack (available separately). The L70 USB dual-charging station (available separately) is required for the BA 70 batteries.

Note: The EW-D SKM-S is NOT backward-compatible with previous evolution analog systems.

Compatible Microphone Capsules

  • The EW-D SKM's interchangeable capsule design allows you to use a variety of optional dynamic and condenser mic capsules, with pickup patterns ranging from wide omnidirectional to narrow supercardioid—capsules include the MMD 845, MME 865, MMD 935, MMD 945, MMD 42, MM 435, ME 9004, MD 5235, ME 5004, and Neuman KK204 to name a few.

Sennheiser EW-D SKM-S Specs

Wireless Technology Digital UHF
RF Frequency Band 552 to 607 MHz
RF Bandwidth 56 MHz
Frequency Step Size 25 kHz
RF Channel Scanning Auto-Scan
Max Operating Range 328.1' / 100 m (Line of Sight)
Bluetooth 5.1
Bluetooth Operating Distance 120' / 36.6 m (Transmitter Sync, App Control)
Sample Rate/Resolution 24-Bit
Latency 1.9 ms
Encryption None
Transmitter Type Handheld
RF Output Power 10 mW (ERP)
Up to 10 mW (EIRP)
Audio I/O None
Muting Mute Switch
Audio Input Level 2 to 4.35 V RMS
Auto-Level Control No
Frequency Response 20 Hz to 20 kHz
Sync Method Bluetooth
Antenna 1 x Internal (Handheld)
Power Requirements Battery
Battery Type 2 x AA (Included)
1 x Sennheiser Battery Pack (Not Included, Replaceable)
Approx. Battery Life 8 Hours (Alkaline)
12 Hours (Sennheiser Battery Pack)
Display & Indicators 1 x LED (Mute)
1 x LED (Sync)
Dimensions 1.6 x 7.9" / 40 x 200 mm
Weight 6.9 oz / 195 g (without Batteries)
Packaging Info
Package Weight 0.98 lb
Box Dimensions (LxWxH) 13.7 x 3.2 x 3"

Delivery & Returns

At Gear Club Direct, we want you to be happy with your purchase. We understand that there are times when once a product is received, it may not be what you needed or wanted after all. So, we will gladly accept your qualifying return within 15 days of the delivery date. After 15 days of the delivery date, all sales are final. 


The Return Process
Customers are required to obtain a Pre-Authorization to return any product. To submit a request for a return, simply log in to your account and request a return and one of our sales representatives will contact you within 24-48 business hours. If you do not have an account with us, please open a help ticket, providing as much detail as possible and whether you are requesting a refund or an exchange.  READ MORE

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