Clear sound and complete confidence with the 4th generation of Sony's DWX series to enhance audio at live events.

Sony announces the launch of the DWT-B40 bodypack transmitter and DWR-R40Q rack-mount receiver, the latest additions to the DWX digital wireless microphone series, designed to offer intuitive and simple operation for a wide range of users while ensuring advanced transmission reliability. The two new models, the DWT-B40 and DWR-R40Q, are expected to be available in February 2027.

Traditionally, frequency setup for wireless microphones has required specialized knowledge and complex procedures. However, with the fourth generation of the DWX series, channel configuration and pairing can now be carried out through simple operations, making the products suitable not only for professional production environments but also for a wider range of applications, from theatres, operas and musicals to small- and large-scale studios handling all types of live productions.

Despite its affordable price, the new series offers greater transmission reliability thanks to improved RF stability and long-distance audio transmission. For the first time, the DWT-B40 incorporates an audio recording function built into the transmitter, based on Sony's proprietary technology, enabling distortion-free backup recordings directly on the transmitter itself, giving users peace of mind and reliable protection against unexpected issues on set.

Wireless audio has traditionally been an area where achieving reliable results can require a high level of technical expertise. With the fourth generation of our DWX series, we are making advanced wireless technology more intuitive and accessible, without compromising the reliability professional users expect. The DWT-B40 and DWR-R40Q combine simple operation with robust transmission performance, while the DWT-B40's built-in backup recording provides additional reassurance for productions where capturing every moment is critical, comments Markus Warlich, Head of Professional Audio at Sony Europe. 

Key features of the fourth-generation DWX series

Professional-grade transmission reliability at a more affordable price

This series delivers high professional-grade performance at a competitive price, making it suitable for a wide range of production applications. In terms of transmission reliability, improved interference resistance and low-noise RF output waveforms ensure consistent and stable operation even in challenging RF environments.

The DWT-B40 supports a maximum transmission power of 50 mW, enabling stable long-distance audio transmission without the need for an external power supply, and can operate at high transmission power in environments requiring extended transmission range.

The DWT-B40 offers flexible audio transmission options tailored to a variety of production needs, from configurations that deliver exceptional sound quality with low latency to modes optimized for maximum transmission reliability in demanding broadcast and sports environments.

Meanwhile, the DWR-R40Q uses high-performance radio frequency (RF) technology in its receiver circuitry, significantly improving transmission stability and delivering reliable performance even in RF-congested environments. In addition, its 4-antenna diversity mode further enhances transmission stability.

Simple setup for everyone

This series allows users to configure frequencies and pair four channels with just a few button presses. This intuitive workflow makes the products easy to operate for any user, allowing recording to begin almost immediately.

The DWT-B40 now supports power via lithium-ion batteries (sold separately) and USB, offering greater flexibility and convenience when securing power on location. Condenser microphones can be connected directly to the transmitter, which also provides +48 V phantom power.The DWR-R40Q supports 4-channel diversity reception in a 1U format, helping to maximize space efficiency, and is compatible with Dante audio networking through an expanded set of four output ports, providing flexible output options to accommodate a variety of user workflows while delivering more stable IP connectivity. It also retains analog XLR connections to support conventional operations.

Internal 32-bit float recording on the DWT-B40 powered by Sony's proprietary technology

Thanks to Sony's proprietary algorithm, internal 32-bit float recording provides a reliable backup even in the event of wireless signal interruption, helping users prepare for potential audio issues on set. The 32-bit floating-point format prevents distortion at any gain level and, combined with Sony's signature clear, low-noise sound, ensures stable audio capture. Recording can be activated directly using the REC button or remotely from the receiver via Cross Remote control. Timecode synchronization streamlines post-production workflows, while data transfer via microSD card is quick and easy.