Sony DWX Gen 4: 32-bit Float Backup, 1.1ms Latency, and Lower Costs

Key points

• The DWT-B40 transmitter includes internal 32-bit float recording on microSD cards, serving as a backup against wireless interruptions and providing high-dynamic-range isolated audio for post-production.
• Latency has been reduced to 1.1ms for both analog and digital outputs, a significant improvement over the previous generation's 1.2ms digital and 2.2ms analog latency.
• The new four-channel DWR-R40Q receiver costs €6,490, which is significantly cheaper than the previous two-receiver setup that cost approximately €9,400, representing a 30% price reduction for equivalent channel capacity.
• The system maintains backward compatibility with DWX transmitters and receivers from 2012 onward, allowing users to mix new and old hardware if they use the same codec.
• Availability is expected in February or March 2027, with a new Codec Mode 6 planned for Q1 2027 to further improve audio quality.

Background

Sony first introduced its professional DWX digital wireless system in 2008. The fourth generation builds on this legacy by addressing the need for more accessible and reliable wireless audio solutions. Recent trends in the industry, such as DJI's Mic Mini 2S, have shown a growing demand for 32-bit float recording in smaller, more affordable wireless devices. Sony's move aims to bring similar reliability and backup capabilities to high-end broadcast and film productions while making the technology more accessible to a wider range of professional users.

How outlets are covering it

CineD provides detailed technical insights from IBC 2026, highlighting the practical implications of the 32-bit float recording and the reduced latency. They note that while the 32-bit float recording cannot be transmitted wirelessly due to bandwidth limitations, it serves as a crucial backup. TPi Magazine emphasizes the ease of use and the competitive pricing, noting that the new system is designed to be more intuitive for a broader range of users, including those in theatres and studios. IBC.org offers a more general overview, focusing on the launch of the new models and their expected availability. All sources agree on the key features and the expected launch date, but CineD provides the most detailed technical analysis, while TPi focuses on the user experience and market positioning.

Why it matters

The introduction of the Sony DWX Gen 4 system is significant for the professional audio industry as it brings advanced features like 32-bit float recording and low latency to a more accessible price point. This could democratize high-quality wireless audio solutions, making them available to a wider range of productions, from large-scale broadcasts to smaller studios and theatres. The backward compatibility with existing DWX hardware also ensures a smoother transition for users who have invested in the previous generations, reducing the overall cost of upgrading their systems.

What to watch

Sony is expected to release the DWX Gen 4 system in February or March 2027. A new Codec Mode 6 is planned for Q1 2027, which aims to further improve audio quality. The company is also monitoring the expiration of the Zaxcom patent, which currently restricts simultaneous recording and transmission in the U.S. market. Once the patent expires, Sony hopes to remove this restriction through a firmware update, potentially enhancing the system's capabilities in the U.S. market.