Personal sound amplification devices, or PSAPs, amplify sound waves for those who have normal hearing, or hearing thresholds of 20 dB or better in both ears. Unlike hearing aids, hearing amplifiers ...

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including ...

Think of a TV antenna amplifier like a megaphone for your TV. It can improve reception but doesn’t always help. Too much amplification can make the picture worse, especially if you’re close to towers.