Sound enhancers are devices that help to amplify sound. The term can refer to a variety of different tools, such as a microphone (MIKE), an amplifier (AMP), or a hearing aid (HEARINGAID). A microphone is a device that converts sound into electrical signals, while an amplifier increases the strength of those signals. A hearing aid is a device worn in or around the ear that amplifies sound for people with hearing impairments. All three of these devices can be used to enhance sound and make it louder.