Archtop guitars are a type of acoustic guitar characterized by their curved top and back, which enhances sound projection and tonal quality. They typically feature a hollow body and are often used in genres like jazz and blues. The design allows for a rich, resonant sound, making them popular among musicians. These guitars usually come with either a floating or mounted pickup, enabling them to be amplified for performances. Notable musicians like Wes Montgomery and Joe Pass have famously played archtop guitars, showcasing their versatility and unique sound in various musical styles.