The Sony UWP-D21 is a dependable camera-mount wireless lavalier microphone system that delivers uncompromising audio quality while still being easy to use and fast to set up with no menu diving. It is made with simplicity in mind for DIY cameramen, videographers, vloggers, and journalists working in the field without a crew. The system is packed with professional features, including NFC Sync and Auto-Gain functions, which handle time-consuming frequency setup and mic-level adjustments for you, so you're ready to shoot within seconds. Sony shooters can take advantage of the SMAD-P5 digital MI Shoe adapter (available separately), which provides a direct, clean digital audio connection to select cameras equipped with a digital Multi Interface Shoe. With the UWP-D21, you can focus on the other critical elements competing for your attention during a shoot and confidently record crisp, clear speech, or dialog for projects ranging from documentaries to wedding videos, YouTube content, corporate spots, and hands-free interviews.
Professional Features to Speed Up Your Audio Workflow
The Sony UWP-D21 is a dependable camera-mount wireless lavalier microphone system that delivers uncompromising audio quality while still being easy to use and fast to set up with no menu diving. It is made with simplicity in mind for DIY cameramen, videographers, vloggers, and journalists working in the field without a crew. The system is packed with professional features, including NFC Sync and Auto-Gain functions, which handle time-consuming frequency setup and mic-level adjustments for you, so you're ready to shoot within seconds. Sony shooters can take advantage of the SMAD-P5 digital MI Shoe adapter (available separately), which provides a direct, clean digital audio connection to select cameras equipped with a digital Multi Interface Shoe. With the UWP-D21, you can focus on the other critical elements competing for your attention during a shoot and confidently record crisp, clear speech, or dialog for projects ranging from documentaries to wedding videos, YouTube content, corporate spots, and hands-free interviews.
NFC Automatic Channel-Setting Mode
Press and hold the NFC/Sync button, and the receiver scans for the cleanest RF channel. Simply hold the transmitter next to the receiver; it automatically syncs up and you’re good to go. Unlike purely digital systems, the UWP-D21 allows you to send a single mic to multiple cameras for broadcast applications. Fast NFC communication makes setup for multiple receivers a breeze
Auto-Gain Mode to Prevent Mic Distortion
Auto-Gain mode saves you the time and aggravation of setting and managing the input level on the transmitter. It uses a limiter to help prevent distortion, great when the loudness of the presenter’s voice is unknown. The +15 dB Gain Volume-Boost mode boosts the mic gain by 15 dB to compensate for situations when the mic is not close enough to the presenter’s mouth and the audio level is insufficient. Manual input-level setting is also available.
High-Visibility OLED Display for Indoor/Outdoor Use
Both transmitter and receiver feature an easy-to-read OLED display. The quick response of the display lets you see the operating conditions clearly and accurately in real time, even in bright sunlight.
Channel Memory Function
The channel memory function lets you quickly switch between the groom's lav mic and the wedding guest's interview mic with the press of a button. It also allows for a fast change between mics in corporate presentations or quickly swapping to a back-up mic.
Reliable Reception with True Diversity
To achieve stable audio, the UWP-D receiver employs true-diversity technology with two antennas and two independent receiver sections within the unit. Both RF signals are compared and the stronger signal is automatically selected for output—reducing dropouts to a minimum. The angle of the two antennas can also be adjusted, which helps to further prevent signal dropouts. The system offers a 72 MHz bandwidth with 2772 UHF frequencies.
High-Quality Sound with Digital Audio Processing
Unlike traditional analog wireless systems, The UWP-D supplements its proven analog UHF transmission technology with a proprietary digital audio processing. Two levels of DSP filtering help remove the artifacts caused by occupancy sensors used in modern "green" buildings to turn off lights when people leave a room. Transient sounds and consonants are reproduced with greater accuracy, resulting in clear, natural sound that’s intelligible and nuanced. The ECM-V1BMP lavalier mic is optimized for capturing clear and intelligible speech. This omnidirectional mic picks up sound from every direction, allowing for a variety of placement options and freedom of movement.
A Compact Build, Ready for the Camera
The UWP-D21 features a robust, all-metal construction well suited for tough operating conditions. The compact bodypack transmitter is lightweight and comfortable for the talent to wear. A locking, 3.5mm BMP-type microphone input connector ensures that your lav doesn’t detach at a critical moment. Using the included shoe mount adapter, the receiver easily mounts on your camera, while adding minimal weight to your rig. Cables are included to connect to cameras equipped with either a 3.5mm or an XLR audio input.
Direct Digital Audio via SMAD-P5 MI Shoe Adapter
The SMAD-P5 digital MI Shoe adapter allows you to integrate the receiver with XDCAM camcorders and select Sony cameras equipped with a digital Multi Interface Shoe.
This setup provides a direct digital connection, skipping the receiver’s D/A and camera’s A/D converters for superior audio quality and low noise.
Audio information such as RF level meter, audio-mute status, and low-battery alert for the transmitters is displayed on the camera's viewfinder.
This cable-free configuration allows for fast setup in the field.
Compatible models include the a7R IV mirrorless camera, the PXW-Z280 and PXW-Z190 XDCAM camcorders, and more.
Multiple Powering Options
Two AA batteries (alkaline or NiMH rechargeable type) power the transmitter for up to 8 hours and the receiver for up to 6 hours.
A battery count-up timer allows for accurate reading of battery running time to minute accuracy.
>The transmitter and receiver can also be powered through their USB ports, allowing them to run for numerous hours on a USB power pack or indefinitely, if you have access to AC.
With the SMAD-P5 Digital MI Shoe adapter, the receiver can get power directly from Sony cameras equipped with an MI Shoe.
Cartridge-type battery cases allow for quick battery replacement on set.
Headphone Monitoring for Location Sound
If your camera doesn’t have a headphone jack, Phone mode lets you monitor your sound via the receiver’s headphone output while recording. When the receiver is used as a personal monitoring device by director or crew on set, Monitor mode lets you adjust the headphone volume on the fly with the +/- buttons.
Other Features
The RF output level on the transmitter has two settings: the 5mW option allows you to conserve battery life, while the 30mW setting gives you more power to overcome interference, great in busy RF environments.
Switchable Mic/Line input level, so you can set the correct gain level for your sound source.
Low-cut filter reduces noise caused by wind or machinery—Off / Low (100 Hz) / Mid (150 Hz) / High (200 Hz).
The receiver provides a variable output level control of ±12 dB, useful when working with cameras without manual input level control.
Simple menus make navigation easy. Advanced menus for in-depth control are also available.
The variable mute button on the transmitter can be programmed for latched or momentary muting. It can also be used as a momentary talk button.
You can operate up to 16 mics in one location.
Configure Your System to Do More
With this set, you can add the UTX-M40 handheld wireless mic with a cardioid capsule, ideal in situations where you don't have time to position a lavalier mic or you need to quickly pass the mic between several people. Adding the UTX-P40 plug-on transmitter with 48V phantom allows you to connect any handheld microphone of your choice for man-on-the-street-style interviews or a shotgun mic for wireless booming. For clearer speech in noisy environments, you can substitute the included lav mic with an ECM-322BMP headset mic.
Compatibility with Other Sony Wireless Systems
The UWP-D transmitter can be used with a UWP Series or WL-800 Series receiver. A UWP Series or WL-800 Series transmitter can be used with a UWP-D receiver.
UPC: 027242918542
Sony UWP-D21 Specs
Key Specs
Wireless Technology
Analog UHF
Diversity
Yes, True Diversity
Max Operating Range
330' / 100.6 m (Typical)
Receiver Type
1x Camera-Mount
Number of Audio Channels
1
Included Transmitters
1x Bodypack
Microphone Type
1x Lavalier
System
Wireless Technology
Analog UHF
Diversity
Yes, True Diversity
RF Frequency Band
536 to 608 MHz
Number of RF Channel Frequencies
2772
Max Operating Range
330' / 100.6 m (Typical)
Max Transmitters per Band
16
Latency
0.35 ms
Encryption
No
Built-In Recorder
No
Timecode Support
No
Mobile App Compatible
No
Receiver
Receiver Type
1x Camera-Mount
Mounting Options
Shoe-Mount (with Included Hardware)
Antenna
2x Fixed 1/4 Wave External (Top-Mount)
Number of Audio Channels
1
Audio I/O
1x 1/8" / 3.5 mm Locking TRS Unbalanced Output 1x 1/8" / 3.5 mm TRS Headphone Output
Network I/O
No
USB/Lightning Connectivity
1x USB-C Female (Bus Power)
Gain Range
-12 to +12 dB (3 dB Steps)
Frequency Response
23 Hz to 18 kHz
Display
OLED
Power Requirements
Battery, Bus Power (USB)
Transmitter
Included Transmitters
1x Bodypack
RF Output Power
5 / 30 mW
Antenna
Fixed 1/4 Wave External
Input Level
Microphone / Line
Audio I/O
1x 1/8" / 3.5 mm Locking TRS Female Input
Bias/Plug-In & Phantom Power
Bias/Plug-In Power is Unspecified by Manufacturer No Phantom Support
USB I/O
1x USB-C (Bus Power, Charging)
Muting
Mute Switch
Gain Range
0 to 21 dB (3 dB Steps)
Auto-Level/Gain
No
Frequency Response
23 Hz to 18 kHz
Sync Method
NFC
Display
OLED
Microphone
Microphone Type
1x Lavalier
Polar Pattern
Omnidirectional
Frequency Response
40 Hz to 20 kHz
Sensitivity
-43 dB (at 1 kHz)
Output Connector
1x 1/8" / 3.5 mm Locking TRS Male
Cable Length
3.9' / 1.19 m
Color
Black
Power
Receiver Battery Type
2x AA (Not Included)
Receiver Battery Life
6 Hours (Alkaline)
Transmitter Battery Type
2x AA (Not Included)
Transmitter Battery Life
8 Hours (Alkaline)
AC/DC Power Adapter
3 VDC (Not Included)
Input Power
3 VDC
Physical
Environmental Resistance
No
Housing
Metal
Dimensions
Receiver: 2.7 x 3.2 x 0.9" / 68 x 82 x 23.8 mm (without Antennas) Transmitter: 2.5 x 3.2 x 0.8" / 63 x 82 x 20 mm (without Antennas) Lavalier: 0.8 x 0.3" / 19.5 x 6.8 mm
Weight
Receiver: 6.2 oz / 175.8 g (with Batteries) Transmitter: 5.3 oz / 149 g (without Batteries) Microphone: 0.6 oz / 16.2 g
Packaging Info
Package Weight
1.715 lb
Box Dimensions (LxWxH)
13.2 x 11.4 x 2.8"
Sony UWP-D21 Reviews
Great Wireless Mic at a good price
By Scott
Rated 5 out of 5
Date: 2025-05-13
I needed a second wireless mic for a project. I previously purchased a Sony UWP-D26 mic with both a belt pack and plug-on transmitter. I use the belt pack, but have yet to have used the plug-on transmitter. That will come into use this summer for a project I will be working on.
I chose to get another Sony Wireless mic, but without the plug-on transmitter. So I chose the UWP-D21 version consisting of a belt pack transmitter and receiver.
I have been very pleased with this version of the Sony wireless mics. The Sony wireless mic system has a belt pack transmitter and diversity receiver. Meaning it has dual receivers for better reception. The antenna's are not too long and just right for using these in my audio recorder bag. The microphones are very good. They use a TRS type plug-in locking connector. You plug in the TRS connector and then tighten a screw thread collar to secure the mic to the transmitter pack. I wouldn't get a mic without this feature.
I do prefer the mini-XLR type connectors of the Lectrosonics, but I couldn't afford one of those.
The receiver also uses a TRS locking type connector for the output audio signal. There are 2 output cables included with the mic system. One is for the locking TRS connector and the other end is a full XLR connector to attaching to an audio recorder or to a camera with XLR jack. The second cable included is a locking TRS connector to a TRS cable for attaching to cameras with the TRS connector.
TRS - stands for Tip, Ring, Sleeve. As they have 3 sections on the connector and look like a headphone jack.
You hold the power button down to turn on the unit, and hold for over 1 second again to turn it off. A simple single press won't do anything. This is so you can't accidentally turn off the transmitter or receiver when in use.
This Sony system is a UHF system which is better and more professional than the 2.5GHz units that use standard wireless signals like many other systems. Which is a more popular frequency.
The UHF system is very quiet and fairly interference free. I chose the 470 to 542 MHz frequency range as it is a lower frequency than the other options and therefor have a longer distance range and more frequencies in this range than the others. Not that I need that many, but it gives me more options.
The batteries are in a small removable compartment with the option to purchase more compartments for quick battery change. But I find that removing the compartment and replacing the AA batteries to be quite easy and quick.
I use Panasonic enloop rechargeable batteries and have been very happy using them.
The display turns off after about 30 seconds as to not use any more battery than needed. A simple short press of the power button turn the display back on again. The display shows the remaining battery level, channel and frequency, along with frequency strength and signal strength of the A and B receivers.
I wish changing the frequencies manually were easier, but it does have a clear-scan and near field sync feature. By pressing the NFC button you can find the cleanest signal and match the transmitter to it.
I find the Sony UWP-D series wireless mic system to be very reliable and has great sound quality. I have used them on a movie set to mic actors as well as for interviews.
The belt packs are not too large and not too small. They are about the same size as the Sennheiser body packs.
Actually I think they are less expensive than the Sennheiser. I have used the Sennheiser brand before and had lots of problems with the mic cables. I like the Sennheiser brand, but have been very happy with the Sony brand.
They are well made and seem to be durable for lots of use. I'm pleased with my purchase. The price at B&H is very reasonable. Great quality at a good price.
unbelievable quality and design
By Brendan
Rated 5 out of 5
Date: 2023-11-28
I cannot believe I now can sync clean frequencies by tapping these together. Unreal. A+++
See any errors on this page?
I heard the lav mics for these aren't very good ...
I heard the lav mics for these aren't very good in terms of sound, and maybe durability? Should I buy a different one, if so what one? Are they even compatible with different lav mic brands?
Asked by: Luis
There are many high quality lavalier microphone candidates that are compatible for use with the Sony UWP-D21 Camera-Mount Wireless Omni Lavalier Microphone System from Sony as well as third party brands such as Sanken, Countryman, and DPA to name a few. A compatible microphone should specify that its 3.5mm locking connection is wired specifically for use with Sony transmitters.
Answered by: Matt Z
Date published: 2024-04-08
best band for Colorado area?
best band for Colorado area?
Asked by: Zac
This band would be the best for the Colorado area.
Answered by: Daniel
Date published: 2020-10-14
How do I moniter the audio that the Sony UWP-D21 ...
How do I moniter the audio that the Sony UWP-D21 is recording directly through my camera? Do I need to buy the Sony multi interface shoe so that it can connect wirelessly? Would I be able to listen to the audio from the camera if I plugged headphones into the headphone jack on the camera while using the Sony multi interface shoe?
Asked by: Luis
Yes, audio coming into the camera through the Multi-Interface Shoe from the Sony UWP-D21 Camera-Mount Wireless Omni Lavalier Microphone System can be monitored via the camera's headphone jack.
Answered by: Matt Z
Date published: 2022-08-10
Is there a dual channel receiver compatible with ...
Is there a dual channel receiver compatible with these new UWP-D21 transmitters?
Asked by: Anonymous
The URXP03D is fully compatible with the UTXB40, UTXP40, or UTXM40 transmitters : https://bhpho.to/3simqS5
We currently have this available in the UC14 and UC25 frequency ranges. We do not currently have a version for the UC90 range.
Answered by: Jordan K
Date published: 2021-12-17
Can I purchase just the receiver only? I cant ...
Can I purchase just the receiver only? I cant find it all by itself. I just need a couple more of them
Asked by: Jimmy
Yes you can. For this frequency range, it is B&H # SOURXP4025.
Answered by: Daniel
Date published: 2020-07-07
How do you know when the battery charge is ...
How do you know when the battery charge is running low on these?
Asked by: Luis
The transmitter and receiver in the Sony UWP-D21 Camera-Mount Wireless Omni Lavalier Microphone System both have a "Power" LED indicator on their front panels to inform the user of current battery life status. A solid green light indicates sufficient battery status, while a blinking green light indicates low battery status.
Answered by: Matt Z
Date published: 2022-08-08
Does the UWP-D21 work on an a6300?
Does the UWP-D21 work on an a6300?
Asked by: Linwood
Yes the UWP-D21 will work on the a6300 or any camera that has an 1/8'' mic input.
Answered by: David M
Date published: 2022-01-23
Can this use rechargeable batteries, if so can ...
Can this use rechargeable batteries, if so can you recommend me one that lasts long on a single charge? Also what just normal batteries make this last long on a single charge?
Asked by: Luis
The transmitter and receiver in the Sony UWP-D21 Camera-Mount Wireless Omni Lavalier Microphone System each operate using two AA batteries, of which there are quality rechargeable and disposable options. The Panasonic Eneloop Pro Rechargeable AA Ni-MH Batteries with Charger (BH #PAKJ17KHCA4A) are a good rechargeable battery choice, and the Energizer Ultimate Lithium AA Batteries (BH #ENAALU4) are a long lasting disposable alternative.
