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Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic (UC25: 536 to 608 MHz)

BH #SOUTXB4025 • MFR #UTX-B40/25
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Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic (UC25: 536 to 608 MHz)
Key Features
  • For UWP-D Wireless Systems
  • ECM-V1BMP Omnidirectional Lavalier
  • Locking 3.5mm BMP-Style Connector
  • 2772 Auto-Scan Frequencies with NFC
The Sony UTX-B40 is a wireless bodypack transmitter compatible with the URX-P40 camera-mount receiver. Compact and lightweight, with a robust, all-metal construction, this bodypack is well suited for tough operating conditions, while remaining comfortable for the talent to wear. It provides up to 8 hours of operation on two AA batteries, with a selectable 5/30mW RF power output and a transmission range up to 330'.
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Sony UTX-B40 Overview

The Sony UTX-B40 is a wireless bodypack transmitter compatible with the URX-P40 camera-mount receiver. Compact and lightweight, with a robust, all-metal construction, this bodypack is well suited for tough operating conditions, while remaining comfortable for the talent to wear. It provides up to 8 hours of operation on two AA batteries, with a selectable 5/30mW RF power output and a transmission range up to 330'.

The UTX-B40 comes with an ECM-V1BMP omnidirectional lavalier microphone optimized for speech. The transmitter has a locking, 3.5mm BMP-type microphone input connector with an adjustable input level to accommodate other compatible lavalier or headset microphones of your choice. The transmitter offers a 72 MHz bandwidth with 2772 selectable UHF frequencies.

The UTX-B40 is backward-compatible with Sony WL-800 and UWP Series systems.

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. 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.

Automatic NFC Sync Mode
Press and hold the NFC/Sync button on the receiver and it 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 UTX-B40 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
The unit features 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.
DSP Filter Removes Occupancy Sensors Artifacts
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.
Multiple Powering Options
Two AA batteries (alkaline or NiMH rechargeable type) power the transmitter for up to 8 hours.

The unit can also be powered through its USB port, allowing it to run for numerous hours on a USB power pack or indefinitely, if you have access to AC.

A battery count-up timer allows for accurate reading of battery running time to minute accuracy.

Other Features
  • 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).
  • 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.
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: 027242918658

Sony UTX-B40 Specs

Key Specs
Wireless Technology
Analog UHF
Max Operating Range
330' / 100.6 m (Typical)
Included Transmitters
1x Bodypack
Microphone Type
1x Lavalier
System
Wireless Technology
Analog UHF
RF Frequency Band
536 to 542 MHz
RF Channel Scanning
Auto-Scan
Max Operating Range
330' / 100.6 m (Typical)
Latency
0.35 ms
Encryption
No
Built-In Recorder
No
Timecode Support
No
Mobile App Compatible
No
Transmitter
Included Transmitters
1x Bodypack
RF Output Power
5 / 30 mW
Antenna
Fixed 1/4 Wave External
Input Level
Microphone / Instrument / 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
Yes
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
Transmitter Battery Type
2x AA (Not Included)
Transmitter Battery Life
8 Hours (Alkaline)
Physical
Housing
Metal
Dimensions
Transmitter:
2.5 x 3.2 x 0.8" / 63 x 82 x 20 mm (without Antennas)
Microphone:
0.8 x 0.3" / 19.5 x 6.8 mm
Weight
Transmitter:
5.3 oz / 149 g (without Batteries)
Microphone:
0.6 oz / 16.2 g
Packaging Info
Package Weight
0.99 lb
Box Dimensions (LxWxH)
13.3 x 8.3 x 2.9"

Sony UTX-B40 Reviews

Doesn't work with Countryman B3 for Sony

By Craig
Rated 2 out of 5
Date: 2021-08-31

Don't make the same mistake I did. This newly designed transmitter is nice in a lot of ways but the Mic port is made for a Lav with a longer 3.5mm stem than the one on the Countryman B3. This results on a LOT of static because the mic doesn't make a solid connection. I've tried this with different Countryman B3's and different UTX-B40 transmitters and the results are always the same. Unfortunately the only way to fix this problem is to have your Countryman B3 rewired with a longer 3.5mm jack.

Great sound, Far Range, Tough Build

By Dan
Rated 5 out of 5
Date: 2020-05-05

Bought these to pair to my Sony URX-PO3D dual receiver. They synced up immediately. I added the Countryman EMW Lavs w/ Sony connectors and the sound is fantastic. The body pack is smaller than any other I've had before, but it is very solid. I put it on and walked outside the building and across the parking lot - solid signal. This will be my go-to audio setup for a long time!

See any errors on this page?

What's the difference between the b40 and b03 ...

What's the difference between the b40 and b03 body pack?
Asked by: Angelito
The Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic improves upon the UTX-B03 with a slightly smaller form factor, improved battery compartment, and fast, easy frequency setting with NFC Sync.
Answered by: Matt Z
Date published: 2023-03-18

Will two of these work with the URX-P03D ...

Will two of these work with the URX-P03D Dual-Channel Camera-Mount Wireless Receiver?
Asked by: Sawyer
I've just paired a new replacement UTX-B40 microphone with the dual receiver URX-P03D. Done manually in the menus to find matching frequencies.
Answered by: ERIC
Date published: 2023-03-18

can you recharge the batteries (Ni-MH) via the ...

can you recharge the batteries (Ni-MH) via the USB port? Like you can with other Sony wireless gear.
Asked by: Chris
Hi, yes the USB-C port on the transmitter will charge re-chargeable batteries. Thank you for shopping at B&H!
Answered by: Yitzchok
Date published: 2023-03-18

Is there a IR sync as well on the UTX-B40 to let ...

Is there a IR sync as well on the UTX-B40 to let it auto sync with the URX-03D?
Asked by: John
Yes, the Sony UTX-B40 wireless bodypack transmitter does have IR sync capability for use with the URX-P03D, URX-P03, and URX-S03D receivers
Answered by: Lisa S
Date published: 2022-07-06

Can I pair with Senheisser MKE2?

Can I pair with Senheisser MKE2?
Asked by: Justin
I'm sorry, but Sennheiser does not make a version of the MKE2 with the correct wiring for this transmitter.
Answered by: Jordan K
Date published: 2023-03-18

Is there a compatible 3.5mm male to TA3 female ...

Is there a compatible 3.5mm male to TA3 female cable for this?
Asked by: Angelito
No there is not.
Answered by: David M
Date published: 2022-12-20

Will the UTX-B40 work with the URX-P03 receiver. ...

Will the UTX-B40 work with the URX-P03 receiver. I need to replace a broken UTX-B03?
Asked by: Daniel
Trying to and can't sync them. Inquired from staff here before purchasing and the UC25 was recommended. On the back of our URX is says, 566.125-607.875 and 614.125-637.875. According to the above the UC25 is 536-608, so it should work, right? What is the problem? Will be waiting forever to hear from Sony support=(
Answered by: Josh
Date published: 2023-03-18

Hi there. Is there a pouch available for this ...

Hi there. Is there a pouch available for this unit. E.G. will this work?: BH #SOLCSURXP2
Asked by: Marc
Yes, the Remote Audio URSA Pouch for Wireless Transmitters - Medium, Black (B&H # REUPOUCHMEBL) or the On-Stage MA1435 Wireless Transmitter Body Pack Belt - Black (B&H # ONMA1435) will work to hold the Sony UTX-B40 Wireless Bodypack Transmitter.
Answered by: Lisa S
Date published: 2022-05-10
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