Sigma DR-7 late '70s Sunburst
Reverb Estimated Used Price Range
- $450 — $700
Sigma started as a lower-end import brand for Martin in the '70s. The DR-7 was a dreadnought with Rosewood back and sides (hence the DR in the title). Sigmas were built in Japan from 1970 until 1983, and those from this era as considered the best.
Years of Production: 1970 - 2007
Wood Composition: Rosewood back and sides, Spruce top