Two-Way Power Shotgun Electret Condenser Microphone

The ECM-674 is a two-way powered shotgun, electret condenser-type microphone, which delivers excellent sound performance in field and studio production applications at an affordable price.

The ECM-674 offers an excellent sensitivity and a low inherent-noise level. It has a flat-and-wide frequency response and delivers extremely smooth and natural sound reproduction.

A two-way powering capability allows the ECM-674 to be driven by microphone power or batteries, making it suitable for both camcorder mounting and many other sound-gathering applications. Internal: AA-size battery operation. External: DC (40 to 52 V) operation.

In general, old batteries can leak and damage the equipment they are used in. The ECM-674 prevents this by continually detecting the output voltage of the battery and shutting off the power supplied to the electric circuit whenever the voltage drops beneath a certain threshold.

The built-in two-position (M, V) low-cut switch on the ECM-674 provides a simple method of reducing the effects of unwanted ambient noise.


Capsule TypeMono Electret Condenser
Frequency Response40 Hz to 20 kHz
DirectivityUni-directional (super-cardioid)
Sensitivity *[1]-36 dB ±3 dB
Output Impedance *[2]220Ω±20%, Balanced
Dynamic RangePhantom: 107 dB or more
Battery: 98 dB or more
Signal-to-Noise Ratio *[3] 77 dB or more
Inherent Noise *[4]17 dB SPL or less
Induction Noise From External Magnetic Field *[5]0 dB SPL or less
Wind Noise *[6] 50 dB SPL (without windscreen)
45 dB SPL or less (with windscreen)
Maximum Input Sound Pressure Level *[7]Phantom: 124 dB SPL
Battery: 115 dB SPL
ConnectorXLR-3-12C (male)
Mic CableXLR-3 to XLR-3 500 mm 19.6 inches
Power RequirementsExternal: DC 40 V to 52 V
Battery: 1.5 V
Dimensions *[8]φ20 x 200 mm
φ13/16 x 7 7/8 inches
MassApprox. 7.3 oz with battery
Approx. 6.5 oz without battery
Approx. 208 g with battery
Approx. 185 g without battery
Supplied AccessoriesWindscreen (1)
Stand adaptor (2)
Short XLR cable
Operating instructions (1)
Mic spacer (2)
Mic holder (1)
Notes*[1] 0 dB = 1 V/Pa, at 1 kHz
*[2] Output impedance at 1 kHz
*[3] A-weighted, 1 kHz, 1 Pa.
*[4] 0dB SPL = 20µ Pa
*[5] dB SPL/1E-7 T, 0 dB SPL = 20µ Pa.
*[6] Wind noise at 2m/s (0 dB SPL = 20µPa.)
*[7] 0 dB SPL = 20? Pa
*[8] Dimensions are approximate

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