Sigma Guitars was originally launched in 1970 by C.F. Martin & Co. as their dedicated brand for high-quality, affordable acoustic guitars. Built with Martin-inspired designs and solid craftsmanship, Sigma instruments deliver warm, balanced tone and reliable performance at a more accessible price point. Today, the brand continues to produce a wide range of acoustic and electro-acoustic guitars that are ideal for beginners, intermediate players, and gigging musicians. Known for their value and classic styling, Sigma guitars are a popular choice across the UK for players seeking great sound without the high-end price tag.