Sony introduced the ECM-W5, a wireless microphone kit for video creators that records 32-bit float audio both into the camera and onto 64 GB of storage inside each transmitter. The kit costs $399.99 in the US and ships in November, and Sony rates its range at 500 meters in line of sight.
The kit pairs two transmitters with one receiver. Bought on their own, the ECM-W5R receiver and each ECM-W5T transmitter list at $189.99, so assembling the same three pieces one by one would run about $570 by our math, roughly $170 more than the kit. Extra transmitters matter for larger jobs: Sony says the system supports up to four channels of in-camera recording, aimed at interviews, panels and multi-camera shoots, with timecode to keep the cameras and audio aligned.
On a compatible Sony camera, the receiver plugs into the Multi-Interface Shoe, which passes the digital audio straight into the camera and stores it in the same file as the video. Sony says that removes the external recorder and the separate audio file to sync afterward, and the shoe also lets the camera power the receiver. The 32-bit float format keeps quiet and loud sounds intact without constant gain adjustment, though Sony notes it works only at 48 kHz and that a signal clipped at the microphone input cannot be repaired in editing.
Each transmitter also keeps its own copy. The built-in 64 GB holds up to 90 hours of 32-bit float audio at 48 kHz, or up to 60 hours at 24-bit and 96 kHz, the high-resolution mode. The two are separate settings, so choosing 96 kHz means giving up the float format. Battery is the tighter limit: the transmitters are rated for up to 11 hours of operation, far short of what the storage can hold.
Sony claims the ECM-W5 offers roughly three times more stable transmission than the older ECM-W3, a figure from its own internal measurements, and describes the system as built to reduce dropouts in crowded radio environments. A 3.5 mm input takes a lavalier or the ECM-L1, and compatible Sony wireless headphones can monitor the audio without a cable or serve as microphone inputs. A supplied USB-C adapter connects the system to compatible phones and PCs that support USB Audio Class 2.0, and a transmitter can also pair directly over Bluetooth for wireless recording. The housing is dust and moisture resistant, though Sony says that is not a guarantee of full protection.
The single-file workflow is the part that depends on owning the right camera. Without a compatible Sony body, the shoe link and in-camera float recording are unavailable, which leaves the USB and Bluetooth routes and the transmitter backup as the main reasons to buy.
