Electret condenser microphone
Image of the following product: ECM-88B


Ultra-miniature, omni-directional electret condenser lavalier microphone designed for quality-critical applications in studio broadcasting. Dual diaphragm design contributes to high sensitivity, wide dynamic range, and low noise. Generous diaphragm mounting architecture radically reduces common cable noise associated with lavalier microphone designs. Flat and wide frequency response (20Hz – 20kHz) provides natural sound reproduction. Water resistant design maintains sound clarity in almost any application or environment.


Capsule Type
Electret Condenser
Frequency Response
20 Hz to 20 kHz
Sensitivity *[1]
-52 dB +/- 2 dB (when used with DC-78), (-39.0 dB 11.2 mV for BC)
Output Impedance *[2]
30Ω±30%, Unbalanced
100Ω±20%, Balanced (when used with DC-78)
Dynamic Range
99 dB or more
Signal-to-Noise Ratio *[3]
68 dB or more
Inherent Noise *[4]
26 dB SPL or less
Induction Noise From External Magnetic Field *[5]
5 dB SPL or less
Wind Noise *[6]
45 dB SPL or less (with supplied windscreen)
Maximum Input Sound Pressure Level *[7]
125 dB SPL
SMC9-4P 4-pin on microphone. Also supplied with DC-78 Power Supply Unit for XLR-3-12C (male) output connection.
Mic Cable
8.2 feet
2.5 m
Power Requirements
ECM-88B with DC-78 Power Supply connected: Two-way powering; battery operation (AA-size battery) or external DC operation (12 V to 48 V)
ECM-88B 4-pin connector: DC 1.1 V to 10.0 V.
Battery Operating Time
Approx. 6000 h (LR6)
Power Consumption
Internal battery: 0.3 mA or less
External battery: 2 mA or less
Dimensions *[8]
φ5/32 x 11/16 inches (Mic head)
φ3.5 x 16.8 mm (Mic head)
φ20 x 144 mm (DC-78 power unit)
φ13/16 x 5 3/4 inches (DC-78 Power Unit)
Approx. 5.7 oz (with DC-78 power supply)
Approx. 160 g (with DC-78 power supply)
Approx. 0.7 oz (Mic Only)
Approx. 0.5 g (Mic Only)
Supplied Accessories
Urethane type windscreen (1)
Single/vertical type tie clip (1)
Single/horizontal type tie clip (1)
Operating instructions (1)
Mic case (1)
Ferrite clamp (1)
Double/horizontal type tie clip (1)
DC-78 DC Power Supply Unit (1)
Optional Accessories
Wind screen pack
Vertical clip pack
Safety clip pack
Horizontal clip pack
Double clip pack
Color windscreen pack
Black windscreen pack
Accessory kit
*[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] dB SPL/1E-7 T, 0 dB SPL = 20? Pa.
*[6] Wind noise at 2m/s (0 dB SPL = 20?Pa.)
*[7] 0 dB SPL = 20? Pa.
*[8] The values for dimensions are approximate.

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