Audio
Unleash the full potential of Bluetooth LE Audio with Nordic
Versatile Auracast transceiver delivers high-quality audio in public spaces using Nordic Semiconductor LE Audio wireless connectivity
17
Nov
2025
2025
Oslo, Norway
Bettear’s B-RTX Auracast transceiver employs Nordic’s nRF5340 SoC and nRF21540 RF FEM to deliver long range, low latency audio quality crucial for live audio applications
Advanced auditory technology company, Bettear, has launched an AuracastTM broadcast audio-based transceiver that significantly enhances the audio experience for visitors to settings such as museums, public spaces, and guided tours. The Bettear ‘B-RTX’ Auracast transceiver is powered by Nordic Semiconductor’s dual-core nRF5340 multiprotocol SoC, and provides high quality, low latency (<40 ms) audio streaming for assistive listening and direct audio streaming applications. It can also be used as a pre-recorded MP3 files broadcaster over Auracast, as an audio guide, and as a speech-to-text optimizer.
Enhanced range and connection stability
The B-RTX Auracast device supports both transceiver (TX) and receiver (RX) modes and offers versatile connectivity options. For example it can be wirelessly connected to any other Auracast-compatible device—such as hearing aids, cochlear implants, or earbuds—and also includes a built-in 3.5mm TRRS audio jack used for wired headphones, microphones and neck loops. It features a vibrant color screen and large, user-friendly navigation buttons to ease the use of hand-held devices in museums, academic institutions, houses of worship and public venues. In addition to the nRF5340 SoC, the B-RTX device also integrates Nordic’s nRF21540 RF Front-End Module (FEM) to enhance range and connection stability.
Beyond the technical excellence of the hardware, Nordic’s reputation and support network provided Bettear with the complete package needed to successfully develop and bring the B-RTX to market
Yami Thor, CTO of Bettear
“By supporting Auracast, the nRF5340 SoC significantly enhances the Bettear B-RTX transceiver and addresses the limitations of previous Bluetooth audio solutions,” says Yami Thor, CTO of Bettear. “It ensures easy and consistent connectivity reducing the chances of audio dropouts and interruptions, and improves low latency audio quality which is crucial for real-time applications like guided tours and live events. It also extends battery life to more than 20 hours on a single charge.”
The Bettear B-RTX transceiver uses an internal, rechargeable 1400 mAh Li-Poly battery, offering over 20 hours of battery life in RX mode and over 10 hours in TX mode, thanks in part to the ultra-low power capabilities of the Nordic SoC. Nordic’s nRF5340 SoC also integrates powerful dual Arm® Cortex®-M33 processors; a high performance application processor capable of DSP and Floating Point (FP) with 1 MB Flash and 512 KB RAM, and a fully programmable, ultra-low power network processor with 256 KB Flash and 64 KB RAM.
Low latency high quality audio streaming
“Bettear selected the nRF5340 SoC for the B-RTX based on the chip’s advanced technical capabilities,” continues Thor. “It’s dual Arm Cortex-M33 processors enable our device to isolate real-time audio tasks from general operations, ensuring low-latency and high-quality audio streaming. The high memory capacity provides ample resources for intensive audio processing, allowing the B-RTX to decode pre-recorded MP3 files and convert them into Auracast streams in real time.
“Beyond the technical excellence of the hardware, Nordic’s reputation and support network provided Bettear with the complete package needed to successfully develop and bring the B-RTX to market.”
