SONY / ECM-674/9X

The SONY/ECM-674 is a two-way power supply, powered by batteries or an external power source.

■ Electret condenser microphone
■ Sharp directivity that reduces pickup of ambient noise

With its sharp directivity, it is ideal for medium-range recording, such as tabletop recording, narrow-angle outdoor recording, and mounting on a video camera.

■ Compact and lightweight
With a total length of approximately 268 mm and a weight of approximately 185 g, it is easy to use and carry.

■ Equipped with a low-cut switch to cut out unwanted noise and low frequencies

Effectively cuts out noise caused by wind and vibration.

M: Standard response, V: Low-cut response.

■ Two-way power supply
Can be used with either a single AA battery or an external power source.


■Type: Back electret condenser type
■Power supply: Battery: DC 1.5V (uses one AA battery)
■External power supply: DC 40-52V
■Connector: XLR-3-12C equivalent (male)
■Cable: φ5.0mm, 2-core shielded, length approximately 500mm
■External dimensions: Approximately φ20 x 268mm (maximum diameter x total length)
■Weight: Approximately 185g (unit only) / Approximately 208g (including battery)


■Frequency response: 40Hz-20kHz
■Directivity: Acute directivity
■Output impedance: 220Ω±20%, balanced
■Front sensitivity: -36±3dB (0dB=1V/Pa, 1kHz)
■Signal-to-noise ratio: 77dB or more (1kHz, 1Pa)
■Noise:
・Inherent noise: 17dB SPL or less
・Wind noise *1: 50dB SPL or less (without windscreen), 45dB SPL or less (with windscreen)
・Induced noise from external magnetic fields:
■Maximum input sound pressure level: 0dB SPL/1×10-7 (1mG) or less
・124dB SPL (when using external power supply)
・115dB SPL (when using batteries) *2

■Dynamic range: 107dB SPL or more
■Operating temperature: 0-+50°C
■Storage temperature: -20-+60°C


■Battery life:
・AA alkaline batteries (when using Sony LR-6 alkaline batteries): Approximately 2,200 hours
・AA manganese batteries (when using Sony R-6P manganese batteries): Approximately 1,400 hours
■Accessories: Windscreen (1), Microphone Holder PF1/2 (1), Microphone Spacer (1), Connection Cord (1), Instruction Manual (1), Warranty Card (1)

*1 The average noise output generated by a microphone when an airflow of 2 m/sec is directed in each direction of the microphone, converted into an equivalent input sound pressure. (0 dB = 2 x 10-5 Pa)

*2 The equivalent input sound pressure converted into an input level at which the microphone output signal produces 3% waveform distortion at 1 kHz (0 dB = 2 x 10-5 Pa)