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 can't 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 phone's handset/headset and base