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Electro-Voice HM2 Cardioid Condenser Headworn Microphone

The HM2 is a hands-free vocal microphone for people who need to move: lead vocalists, singing instrumentalists, dancers, fitness instructors and presenters. A miniature electret condenser element with a cardioid pattern keeps floor wedges, nearby instruments and crowd noise out of the mix, and the supplied open-pore windscreen takes the edge off wind noise and plosives.

EV voiced it to behave like a handheld vocal mic rather than a flat lavalier, so it keeps the proximity-effect warmth singers expect - move the element closer to the mouth for more of it, further away for less. The behind-the-head band and flexible boom adjust to any head size, the boom descends from the right under protective shrink tubing, and a permanently attached 1.2 m cable ends in a Switchcraft TA4F plug for EV bodypack transmitters.

TypeCardioid electret condenser headworn microphone
Generating elementElectret condenser
Polar patternCardioid
Frequency response30 - 18,000 Hz (measured at 1/2 in. distance)
Sensitivity at 1 kHz4 mV/Pascal (680 ohm load)
Maximum SPL (1% distortion)120 dB
Power requirements1 - 10 V DC, 500 microamps max at 9 V DC
Output connectorSwitchcraft TA4F (pin 1 shield, pins 2 and 4 bias/audio, pin 3 no connection)
Output cable1.2 m (4 ft), 2.5 mm diameter, permanently attached
Headband width140 mm (5.5 in) nominal, 160 mm (6 in) at widest point
FinishNonreflective black
IncludedBlack windscreen