Sony ECM-W3 Wireless Mic review

The Sony ECM-W3 looks like the perfect dual mic wireless setup for Sony users, but it’s pretty expensive, so is it worth it?

Sony ECM-W3
(Image: © Rod Lawton)

Digital Camera World Verdict

The Sony ECM-W3 wireless mic kit is a great match for Sony Alpha cameras with MI digital interfaces because you don’t need to trail a cable from the receiver to the camera’s mic port, which can often get in the way of the screen rotation. The mics/transmitters are paired straight out of the box and super easy to set up and the supplied charging case makes it easy to keep the transmitters and receiver organized and juiced up. The audio sounds great, but did start to drop out when walking away from the camera at 50m or more with poor line of sight between the mic and the receiver.


  • +

    Easy setup

  • +

    Great audio quality

  • +

    Charging case included


  • -

    Line of sight needed at long range

  • -

    Expensive for what it is

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Camera video features tend to grab all the attention, but recording good audio is just as important and often a lot more difficult. Ideally, the microphone needs to be where the sound is coming from, so a cable-free wireless mic you can clip to your clothing is ideal, and so much better than an on-camera mic, however directional.

Simpler wireless mic kits consist of a pair of units – a mic/transmitter and a receiver. Sony has just announced one of these – the ECM-W3S. The ‘S’ stands for ‘single’ (we guess) and it’s a junior product to the ECM-W3 kit which we’re reviewing here.

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Wireless transmissionBluetooth LE
Maximum range150m
Safety TrackYes
Mic/transmitter size25.0 x 52.5 x 20.5mm, 17g
Receiver size32.0 x 29.0 x 50.0mm, 25g
Additional mic input3.5mm analog jack
Receiver outputUSB, 3.5mm analog jack

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Rod Lawton

Rod is an independent photography journalist and editor, and a long-standing Digital Camera World contributor, having previously worked as DCW's Group Reviews editor. Before that he has been technique editor on N-Photo, Head of Testing for the photography division and Camera Channel editor on TechRadar, as well as contributing to many other publications. He has been writing about photography technique, photo editing and digital cameras since they first appeared, and before that began his career writing about film photography. He has used and reviewed practically every interchangeable lens camera launched in the past 20 years, from entry-level DSLRs to medium format cameras, together with lenses, tripods, gimbals, light meters, camera bags and more. Rod has his own camera gear blog at but also writes about photo-editing applications and techniques at