Regal was one of the largest manufacturers in the 1930s and became known for a wide range of resonator stringed instruments, including guitars, mandolins, and ukuleles.

Only resonator guitars are sold under the Regal brand today, with manufacturing in Korea and distribution in San Francisco, United States.

The Regal brand was heavily involved in the production of resonator fretted instruments from their first development until 1941, manufacturing components and bodies for both the National and the Dobro companies (Dobro acquiring National in 1934), though the Dopyera brothers still produced the resonator cones for them.

When National moved from California to Chicago, Regal acquired the rights to manufacture Dobro instruments.

In an effort to reintroduce the brand to global markets and focusing on overseas production sources, Saga Musical Instruments acquired the Regal name in 1987 and has steadily produced a complete line of metal and wood body resophonic instruments.