The National NRP series resonator is modeled after the original Duolian. Introduced in 1930 as a basic steel-bodied, single-cone guitar, it soon became famous for its musical sound.
National Reso-Phonic Guitars has a rich history dating back to the 1920s when they were first developed and patented by John Dopyera. The company was originally known as the National String Instrument Corporation and later became National Reso-Phonic Guitars. We've proudly represented this iconic company for several decades.