- Amplifies incoming voices up to 170 times 45 dB so you hear every word with unmatched clarity- Selectable digital tone enhancement allows you to boost and enrich the speech fequencies you cant hear well making difficult to hear words intelligible again- Automatic gain control optimizes sound level for superior listening comfort- Easy headset handset selection button for extra convenience- Latest digital sound processing technology eliminates virtually all distortion echo effects and unwanted static commonly found in other ordinary amplifiers- Works with virtually all business telephones and headsets it connects between phones handset headset and base- AC adapter included battery 9V optional
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