A resonator guitar is a type of acoustic guitar that uses metal resonators to amplify sound. Unlike traditional guitars that rely on a wooden body for resonance, resonator guitars have one or more metal cones inside the body. These cones vibrate when the strings are played, producing a louder and more distinctive tone, often associated with genres like blues and bluegrass. Resonator guitars come in various styles, including the popular Dobro design, which features a single resonator cone. They can be played with a slide or fingerpicking techniques, making them versatile for different musical styles. The unique sound and construction of resonator guitars have made them a favorite among musicians seeking a rich, vibrant tone.