3/9/2023 0 Comments Sigma guitars dm1![]() ![]() In 1980, the model lines and designations were changed to capitalize on Martin model names: the DM-18, DM-19, DR-28, DR-28H, DR-35, DR-41, DR-45, but the older model types were also continued as well. ![]() There were also classical guitars in the C (Classical) series. Sigma built the GCS (Grand Concert Series) to Martin's 000 body specifications. Some GCR-6 triple 000 and OM Series were built in Japan also. The first Sigma's were dreadnought acoustics, DR-1 through DR-7 (D for dreadnought and R for rosewood and the number denoting the grade, 7 being the top grade instrument). Initial construction was in Japan, and those from 1970 to approximately 1978 were of solid high grade tonewood (top, sides and back) but from then onwards changed to laminated construction for the back and sides. ![]() In 1970, guitar maker Martin created a line of inexpensive guitars to compete with the increasing number of imported guitars from Japan and elsewhere. However, the modifications I've made have improved them substantially.Įxcept for a select few, I believe all Sigmas were produced in either Japan or Korea (rumor had it that they were all sent to Nazareth for assembly at the factory), and it's impossible to date them by means of their serial numbers since they are not numerically chronological.īottomline: like a box of chocolates, with Sigmas you never know what you're going to get, so try before you buy. I have yet to hear of one that came close to its Martin counterpart. Most if not all Sigmas are laminates and vary widely in sound and tone, from awful to not bad. Hi Joe, I have two used Sigmas, a DM3 and DM4 for about $120 each three years ago, which I designate as my "beaters," and I also use them to try out various modifications before applying them to my "real" guitars. ![]()
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