On October 14 Sony announced the ECM-W5, a new two-transmitter, one-receiver wireless system that takes over from the ECM-W3. On paper it is yet another “creator lav kit”, but two details make it worth a look for people working on real sets: 32-bit float audio that goes digitally into the camera, in the same file as the video, and backup recording inside every transmitter.

What’s in the kit

  • Two ECM-W5T transmitters and one ECM-W5R receiver, with a charging case.
  • Claimed range up to 500 metres line of sight; Sony says the link is about three times more stable than the ECM-W3, aimed at crowded RF environments.
  • 32-bit float at 48 kHz sent digitally through the Multi Interface Shoe on compatible cameras, or Hi-Res recording at 96 kHz.
  • Up to four channels recorded in camera by adding a third transmitter.
  • 64 GB of memory in each transmitter: up to 90 hours at 32-bit float/48 kHz or 60 hours at 24-bit/96 kHz.
  • Timecode to sync multiple cameras and recordings, a 3.5 mm input for external lavs, monitoring through compatible Sony wireless headphones.
  • Transmitters run up to 11 hours; listed weights are 27.1 g for the transmitter and 35 g for the receiver.
  • USB-C adapter for phones and computers (USB Audio Class 2.0 devices only) and a dust- and moisture-resistant body, with no IP rating stated.

Price and availability

Pre-orders opened in the US on October 14, with shipping in November 2026. US pricing: $399.99 for the full kit, $189.99 for the receiver alone, $119.99 for a single transmitter. The announcement does not list a euro price yet.

Why 32-bit float in camera actually matters

In the field, the problem with small wireless kits is rarely the capsule: it is gain. The interviewee who suddenly raises their voice, a laugh, applause. With 32-bit float the risk of clipping the recording drops a lot, and having it land straight in the camera file means no syncing in post for everyday material. Keep one thing in mind, which Sony itself states in the release: if the mic input stage clips, you cannot fix it in the edit. Float is not a magic wand, you still have to watch your levels.

The internal backup is, in our view, the most useful part of the kit. On documentaries and cinematic weddings a dropout behind a wall or in a crowd happens, and having the clean track recorded on the transmitter is the difference between a saved scene and a lost one.

Where it makes sense, and where it doesn’t

For a light crew shooting on a Sony FX3 or a Sony mirrorless, with one operator also handling sound, this kit is built exactly for you. Before relying on it with a specific body, though, check the compatibility list Sony has published: digital transfer through the Multi Interface Shoe does not work on every camera. On a Sony FX6 or a BURANO with a sound recordist on the crew, professional UHF radio mics into a mixer are still another league: there the ECM-W5 is a backup or a B-camera mic at best.

Buy or rent?

At $399 it is a purchase plenty of videographers will make, and it makes sense if you shoot interviews every week. If you need it for a single job, renting the whole package makes more sense: camera, wireless and media ready to go, tested before you leave. Have a look at our ready-made kits and call us before you buy: we will tell you what we have seen work on set.

Sources: official Sony Electronics press release and Newsshooter.