ECM-322BC (ECM322BC)

Head Worn Electret Condenser Microphone


The ECM-322BC is a head worn microphone, ideal for a variety of multimedia presentation applications ranging from seminars, conferences to lectures and workshops.


Optimum Sound Pickup
Incorporating an omni-directional microphone capsule for reduced pop-and-wind noises, the ECM-322BC head worn microphone delivers a high sensitivity of -43 dB (7.1 mV) (*1) and allows clear voice pickup from any direction.

(*1) 0 dB=1 V/Pa, at 1 kHz
Ear-Clip Style
Featuring an ear-clip style design, the ECM-322BC head worn microphone can be worn on either the left or right ear and provides to user with a comfortable fit.
Adjustable Microphone Position
The slim and flexible microphone boom allows perfect positioning of the ECM-322BC microphone.
Secure and Comfortable Fit
With its soft-texture ear hook, the ECM-322BC head worn microphone is comfortable to wear and fits snugly on the ear, providing comfort and stability even during the most active presentations.
Compact and Lightweight Design
The ECM-322BC has been designed as a compact and ultra-lightweight head worn microphone, weighing only 15 g (0.5 oz) (*2).

(*2) Excluding the cable
Supplied with a Sony 4-pin connector (SMC9-4P)
Supplied with a Sony 4-pin connector (SMC9-4P)


Audio Section
Capsule Type
Electret Condenser
Frequency Response
50 Hz to 18 kHz
Sensitivity *[1]
-42 dB (7.91 mV) ±3 db
Output Impedance *[2]
1.4kΩ±30%, Unbalanced
Dynamic Range
81 dB or more
Signal-to-Noise Ratio *[3]
60 dB or more
Inherent Noise *[4]
34 dB SPL or less
Wind Noise *[5]
55 dB SPL or less
Maximum Input Sound Pressure Level *[6]
115 dB SPL
General Section
BC type (Supplied with a Sony 4-pin SMC9-4P connector.)
Mic Cable
3.9 feet
1.2 m
Power Requirements
DC 2 V to 10 V
Power Consumption
1.3 mA or less
Dimensions *[7]
φ8.4 x 168 mm (Mic head)
φ11/32 x 6 5/8 inches (Mic head)
Approx. 10 g without connectors
Approx. 0.4 oz without connectors
Supplied Accessories
Operating instructions (1)
Headband (1)
Clip (1)
Carrying case (1)
*[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 = 20? Pa.
*[5] Wind noise at 2m/s (0 dB SPL = 20?Pa.)
*[6] 0 dB SPL = 20? Pa.
*[7] The values for dimensions are approximate.

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