
Sony ECM-W3 Wireless Dual Microphone System
Promotions & Cashbacks
Claim €100 Cashback If Buying or Have Bought A Qualifying Camera
Special Cashback Available for University & College Students
Transform interviews and content creation into captivating dialogues with the ECM-W3 Wireless Microphone System. Designed for versatility and excellence, it offers seamless mobility for interviews from anywhere. Compact, lightweight, and offering an extended battery life of 6 hours on a single charge, this system ensures high-quality voice recording without missing the moment. With Sony's unique Digital Audio technology, the ECM-W3 features high signal-to-noise ratio microphone units, effortless background noise reduction through its Noise Cut filter feature, and intuitive operations. Providing an all-in-one experience with the charging case, protector case/stand, and windscreen, it's the perfect wireless sound capture device for freelance videographers and content creators.
- 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
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.

Add-ons




Digital sound recording with superb quality
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.
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.
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
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.
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.
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.
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.
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
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.
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.
Battery Assist function
Power is supplied directly from the α™ series digital interchangeable-lens cameras or vlog cameras to the receiver
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.
Wind screen
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.
Microphone Channel Audio Output | 2ch |
Shoe Type | Multi Interface Shoe |
Power Supply from Main Unit | Multi Interface Shoe |
Battery Type | Built-in lithium-ion battery |
Monaural / Stereo | Monaural |
Directivity | Omni-directional |
Frequency response | 20 Hz to 20 000 Hz |
Front sensitivity | -20 dBFS (0.1 Pa, 1 kHz) |
Intrinsic noise | 16 dB SPL or less (0 dB = 2×10-5 Pa) |
Maximum input sound pressure level | 120 dB SPL*3 *1 |
Microphone out jack | 3.5 mm mini jack (stereo) |
External microphone input jack | 3.5 mm mini jack (monaural) |
USB Type-C® Terminal | Yes |
Dimension(Approx.) | Transmitter : W 25.0 x H 52.5 x D 20.5 mm (1 x 2 1/8 x 13/16 inches) Receiver : W 32.0 x H 29.0 x D 50.0 mm (1 5/16 x 1 3/16 x 2 inches) Charging Case : W 68.5 x H 41.5 x D 65.5 mm (2 3/4 x 1 11/16 x 2 5/8 inches) |
Weight(Approx.) | Transmitter : 17 g (0.6 oz) Receiver : 25 g (0.9 oz) Charging Case : 90 g (3.2 oz) |
Operating Temperature | 0 °C to +40 °C (+32 °F to +104 °F) |
Supplied Accessories |
1x Wind Screen per Transmitter |

Purchase any eligible Sony camera and register it on "My Sony" to receive an email containing THREE voucher codes (per camera body). Each code entitles you to claim €100 cashback from Sony when you register the purchase of a qualifying new lens / flashgun / grip / microphone / memory card!
1) PURCHASE A SONY CAMERA, REGISTER IT ON MYSONY | 2) FIND THE EMAIL SONY SEND YOU! | 3) CHOOSE A COMPATIBLE PRODUCT, GET YOUR REFUND |
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Register your Sony camera, if included in the promotion, on the MySony website | Find the email Sony sent you containing 3 vouchers worth €100, each usable for the purchases of your next 3 lenses, microphones, or other accessories included in the promotion. | Purchase any of the lenses, microphones or accessories included in the promotion and request the refund at Welcome to Alpha by scanning the QR code. |
Camera to be registered within three months of purchase, while lens / accessory purchases can be made at the same time as or after the purchase of the relevant qualifying camera. Cashback claims can only be submitted after thirty days and within 90 days of the purchase of the lens.
Offer valid from 10/07/2024 to 30/06/2025 (inclusive). Claims can be made until 30/09/2024. Terms & Conditions Apply.
New and returning College or University students on a recognised higher education course in Ireland can make some great savings throughout the 2024-25 Academic year with up to €450 cashback available if they buy selected Sony cameras, lenses, or accessories from Conns Cameras. ⇒Click Here⇐ for more information, or view Sony's Frequently Asked Questions!
This promotion can NOT be claimed in conjunction with any other rebate offer. It is strictly subject to availability, and cannot be applied to orders or layaways which are not collected during the promotional period.
Offer valid from 01/07/2024 to 30/06/2025 (inclusive). Claims can be made until 30/07/2025. Terms & Conditions Apply.
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