In the late 1960s the situation for US guitar manufacturers became
difficult: guitars that were made in Japan, looking very similar to US
guitars, were flooding the market but at a much lower price. These
guitars increasingly endangered the US manufacturers dominance on the
market, and a few American companies reacted to that development in an
appropriate manner: They did not take any legal steps but instead
launched a counter offensive. That’s when “Sigma Guitars” was born.

In 1970 “SIGMA”, the brandname for acoustic guitars, was launched.

They
were built by specially trained staff in the most efficient guitar
factories in Japan and then sent to the US for inspection before being
released for sale and shipping to the music stores. more…