It really depends on your hearing loss. One ear or both, highs, lows or the whole range. They can get expensive, over $5K. I am a vet so I got mine from the VA. Also get free batteries. Some models are rechargeable. Many also have an app on your smartphone that can control them. I no longer have the TV at 25, or the car radio as loud. Hearing things I have not heard in many years. They can be annoying in a crowded setting, they are not selective, they amplify all noise. Glad I got them however, wife says she no longer has to yell at me so I can hear.
