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Countryman B3 Omnidirectional Lavalier with TA4F Connector for Shure, Black

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Countryman B3 Omnidirectional Lav, Black, With TA4F Connector for Shure Wireless, Standard Sensitivity for most uses.

B3 is essential to any well-stocked pro audio toolkit: it captures the highest quality audio available in a lavalier mic, with field-selectable high-frequency response caps and extremely low handling noise. Whether you need a tie-clip lavalier for an interview, a hidden hair mic for drama, a water-resistant mic for reality TV, sports, or hurricane reporting, or simply a small mic to hide in a prop flower vase, you’ll never run out of applications for Countryman’s B3 Lavalier. And that’s exactly why Countryman made the B3 so rugged. The cable is protected from stretching by a rugged aramid core, and the mic’s protective caps are extremely resistant to water, sweat, and makeup. You’d never expect such a mic to be so affordable, making the B3 one of the highest-value audio investments in your kit.


Looks great when you want to see it, virtually disappears when you don’t. The B3 is easily hidden in hair or on costumes, with five colors to match clothing, hair, and skin tones. Use a felt tip marker to color the white caps for near-perfect concealability. Never suffer the hassle and degraded sound quality of under-clothing miking again.

Exceptional Sound Quality

The B3 provides the highest-quality audio available in a lavalier mic, with low distortion at SPL up to 150 dB on 48 V Phantom Power. The aramid cable and ultra-thin diaphragm combine to set a new standard for low handling noise. The ultra flat frequency response accurately captures voice or instruments, and the small size makes the B3 easy to position for ambient noise and feedback rejection.

Rugged and Reliable

The B3 is exceptionally resistant to makeup, sweat, and moisture when used with the supplied protective caps, and works well in hair or on the body. The protective caps are easily removed for cleaning or replacement, and the Aramid-reinforced cable gives it world-class survivability. Versatile Changeable protective caps let you shape the frequency response for different situations or to match other microphones. Versions are available for different speaking or singing styles, with high overload capability for recording instruments.

Product Specification
Frequency Response:20 Hz to 20 kHz
Polar Pattern:Omnidirectional
Power Requirements:

Wireless: 3V to 12V at 200 uA

Phantom: 9V to 48V (4mA at 48V)

Weight:0.012 oz (0.34 g)
Dimensions:0.23" x 0.18" (5.8mm x 4.6mm)

W4 (no band): 12.0 mV/Pascal (-38 dB re 1V/Pa)

W5 (red band): 4.0 mV/Pascal (-48 dB re 1V/Pa)

Equivalent Acoustic Noise:24 dBA
Overload Sound Level:

Wireless: 140 dBA SPL (5V, red band)

Phantom: 150 dBA SPL (48V, red band)

Cable Length:5 Feet

Countryman B3 Omnidirectional Lavalier Datasheet