Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic

Overview

The Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic is a compact, durable transmitter designed for Sony’s UWP-D wireless systems, including full compatibility with the URX-P40 camera-mount receiver. With robust metal construction, selectable RF output, and up to 8 hours of operation on AA batteries, this transmitter is ideal for demanding productions that require reliability, long range, and clear audio capture.

Core Features

• Omnidirectional ECM-V1BMP lavalier mic
• Locking 3.5 mm BMP connector
• 5/30 mW selectable RF output
• NFC auto-sync with receiver
• Up to 8 hours AA battery runtime

High-Quality Digital Audio Processing

Accurate, Natural Sound

The UWP-D system enhances traditional analogue UHF transmission with proprietary digital processing. Transients, consonants, and speech details are reproduced with greater precision, ensuring clear and natural vocal capture.

The included ECM-V1BMP omnidirectional lavalier microphone is optimized for dialogue, offering flexible placement and consistent pickup from all directions.

Automatic NFC Sync Mode

Fast Channel Syncing

The transmitter synchronizes instantly with the receiver via NFC. The receiver scans for the cleanest frequency, and a simple tap syncs the transmitter—ideal for fast-paced environments.

A single microphone can also be transmitted to multiple receivers, making it suitable for multi-camera broadcast workflows.

Gain Management & Input Control

Auto-Gain Protection

Auto-Gain mode prevents distortion by using a limiter when presenter volume is unpredictable. A +15 dB Gain Volume-Boost mode compensates for distant microphone placement.

Manual input-level settings offer full control when preferred.

Visibility & Filtering

OLED Display

A bright, fast-response OLED display ensures easy visibility both indoors and outdoors, with real-time monitoring of audio and system status.

DSP Filtering

Two DSP filter levels effectively reduce interference from occupancy sensors commonly found in modern “green” buildings.

Powering Options

Battery & USB Power

The transmitter runs up to 8 hours on two AA batteries and also supports USB power for extended sessions or continuous operation. A battery count-up timer accurately tracks runtime down to the minute.

Additional Controls & Functions

Operator-Friendly Features

Features include switchable mic/line input, a low-cut filter (Off / 100 / 150 / 200 Hz), simple and advanced menu modes, and a programmable mute button that supports latched or momentary operation.

Up to 16 microphones can be operated simultaneously in one location.

Compatibility

Cross-Series Integration

The UTX-B40 works with UWP-D receivers and is backward-compatible with Sony UWP and WL-800 Series systems, allowing flexible integration into existing workflows.