Product image of the two microphone-transmitter units and receiver in the charging case, sitting on a wooden table
Dual-channel wireless microphone for high-quality digital recording

The ECM-W3 comprises two microphone-transmitters featuring high signal-to-noise (S/N) ratio microphone units, and a dual-channel receiver. The transmitters and receiver process audio digitally and transmit it wirelessly, allowing the capture and recording of two speakers' voices with superb clarity and low noise.

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Digital sound recording with superb quality
Situation image of a pair of men and women filming with a camera with a microphone.
High-quality digital sound recording

High signal-to-noise ratio (S/N) microphone units are integrated into the two combined microphone-transmitters, enabling clear voice recording with low noise.

Illustration of a camera and microphone connected by waves representing digital signals
High-quality dual-channel digital transmission

Connecting the dual-channel receiver to a camera from Sony that supports the Multi Interface (MI) Shoe, such as one of the α™ series digital interchangeable-lens cameras or vlog cameras, allows the digital audio signal output from the receiver to be recorded directly by the camera body, enabling high-quality sound recording with minimal noise contamination.

Usage image showing a man wearing a microphone speaking in a crowded public space
Noise-suppressing filter functions

A noise-cut filter using digital signal processing to effectively remove noise, and a low-cut filter that reduces noise in the low-frequency range, are provided on the microphone side. Less noise removal is needed post-production, making workflow more efficient.

A wide variety of sound recording methods
Usage image of the microphone receiver attached to the camera
Multi Interface (MI) Shoe compatible

The receiver can be easily attached to a camera from Sony that supports the Multi Interface (MI) Shoe, such as one of the α™ series digital interchangeable-lens cameras or vlog cameras, without cables, allowing immediate sound acquisition and avoiding interference with the vari-angle LCD monitor even when it is opened horizontally for shooting. This allows a greater degree of freedom and mobility when shooting.

Photograph of a man and a woman wearing microphones and smiling at a camera with a receiver attached
The convenience of wireless

The ECM-W3 comprises two microphone-transmitters and a dual-channel receiver, allowing wireless sound capture of two speakers' voices. Communication is possible at up to 150 m in clear line-of-sight locations, with Bluetooth 5.3 (Bluetooth Low Energy) and LC3plus codecs providing low power consumption, low latency, and high sound quality. Power saving has also enabled a reduction in battery size.

Product image of the safety button on the receiver
Safety and attenuator functions

A safety function is provided that allows simultaneous recording of two audio signals, one at normal volume and the other 20 dB lower, reducing the risk of clipping during loud recording. An attenuator function is also provided, allowing the recording level to be set to one of three values according to the audio volume.

Product image of the 3.5-mm audio jack and USB connector on the receiver
Microphone audio input/output

A 3.5-mm mini jack (monaural) is provided as an external microphone input terminal on the microphone side, and a 3.5-mm mini jack (stereo) on the receiver side serves as an audio output terminal. In addition to sound acquisition using a stereo-compatible lavalier microphone, output to devices not equipped with a Multi Interface (MI) Shoe is also possible.

Photo of a man giving a presentation wearing a microphone on his clothes
USB digital audio output

Digital audio (48 kHz/24 bit) can be output from the receiver via USB cable to a smartphone or PC, or to a USB audio input compatible device for recording.

Compactness, light weight and high reliability
Usage image of a man attaching the microphone to his clothing
Compact, and lightweight design

Both the microphone-transmitters and receiver have excellent mobility and portability, and are compact and lightweight enough not to get in the way when carrying or shooting. Designed to be dust- and moisture-resistant, they can be used outdoors without worry.

Product image of the receiver
Status notification functions

The LINK lamp indicates the status of the communication channel between the microphone and receiver to prevent recording errors. The POWER lamps on both the microphone and receiver indicate battery level to prevent recording errors due to dead batteries.

Illustration of power being supplied from the camera to the receiver
Battery Assist function

Power is supplied directly from the α™ series digital interchangeable-lens cameras or vlog cameras to the receiver.

Product image of the microphone and receiver in the charging case
Compact charging case

A small charging case is included in the package, allowing you to continue shooting without worrying about running out of battery power. The microphone-transmitter unit can operate continuously for approximately 6 hours on a full charge.

Product image of microphone with wind screen attached
Wind screen (included)

The included wind screen can be used to reduce the wind noise that may occur when the microphone is impacted by strong wind or breath. This allows stable and clear recording of the speaker's voice, even when shooting outdoors.

A wider choice of microphones
Product image of Sony's microphone lineup models side by side
Expansion of Sony's microphone lineup

With a wider selection of microphones available from Sony, you can now choose from a broader range of options depending on the situation and application you wish to use the microphone for.

Specifications and Features

The ECM-W3 comprises two microphone-transmitters featuring high signal-to-noise ratio microphone units, and a dual-channel receiver. The transmitters and receiver process audio digitally and transmit it wirelessly, allowing the capture and recording of two speakers' voices with superb clarity and low noise.
  • High-quality digital sound recording

  • Outstanding dual-channel digital sound transmission

  • Cable-free convenience with wireless transmission and Multi Interface (MI) Shoe

  • Compact, lightweight, highly portable, ideal for vlogging and interviews

  • Versatile with many types of connectivity

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