Plural form of dobro, a type of resonator guitar with a metal cone that amplifies sound.
The Dobro guitar was named after the Dopyera brothers (John, Rudy, and Emil), whose last name was shortened to create the brand name 'Dobro' in the 1920s.
The Dobro revolutionized acoustic guitar by using a metal resonator cone — blues, country, and Hawaiian musicians adopted it because it projected so powerfully that it could be heard over crowds without electrical amplification.
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