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Plantronics amplifier for 2.5mm headsets.

The Plantronics MHA100 makes conversations clearer, and makes words easier to understand, by amplifying incoming sounds up to 24dB (three times louder than normal).

Portable and convenient, the MHA100 can be used by people in noisy environments and by those with mild to moderate hearing loss. It's also good for phones that have low headset output, such as the Panasonic KX-T7700 series phones. The MHA100 is designed for wired, cordless and cellular phones with a 2.5mm headset jack.

Clarity® Power™ technology increases the volume of high frequency sounds, the kind of sounds many people can't hear clearly on the phone.  Voice/sound activated - turns on/off automatically to conserve battery power. The amplifier requires three AC675-type standard hearing aid batteries (included).