The ECM-W3 models are small microphones that can be clipped to a shirt, for example, and differ in the number of microphones and channels. The ECM-W3 model consists of one receiver and two microphones, while the ECM-W3S model consists of one receiver and one microphone. The compact and lightweight microphone units measure 25 x 52.5 x 20.5 millimeters and weigh approximately 17 grams. The receiver measures 32 x 29 x 50 millimeters and weighs 25 grams.
The receiver on both units is compatible with Sony&s Multi Interface (MI) digital accessory shoevo. When the microphones are paired with the camera via the accessory shoe, the audio signal is transmitted directly to the camera to ensure excellent, low-noise audio recordings. This also allows wireless recording without batteries, as the receiver can be powered directly by the camera.
Sony wireless microphones - ECM-W3 and ECM-W3S.
A USB Type-C port allows digital audio (48 kHz/24 bit) to be output from the receiver to a smartphone or PC with a USB port. In addition, the receivers feature a 3.5mm stereo mini jack for audio output.
Also included is a plug protector/stand for the multi-interface accessory shoe, which can also serve as a microphone stand. This is advantageous if the receiver is to be attached to devices other than a camera, or can be used as an adapter with screw holes to attach to a smartphone terminal.
All models have a filter for noise reduction, which effectively reduces disturbing noises with digital signal processing. In addition, there is still an attenuation function that can be used to manually lower the level by -10 or -20 dB. Wireless transmission is via Bluetooth 5.3 (Bluetooth Low Energy), which is recorded with the LC3Plus codec.
With the lightweight, portable charging case, both models can be conveniently charged on the go.
Both models are scheduled to be available in November, the ECM-W3 for 499 euros, the ECM-W3S for 369 euros.