Sigma guitars from the '70s, when the brand was launched by Martin to compete with Japanese manaufacturers, remain sought after to this day. Precious few ever make it to the second-hand market and a ...

He's just accepted a high-profile gig as Assistant Project Manager of A.M.I./Sigma Guitars in Munich, Germany. In 2011, Hankins, who was 20 at the time, ...

Here we look at the SDM-15, a new all-mahogany Korean-built acoustic from Sigma. It's no surprise that these guitars have long been associated with acoustic blues and other uncomplicated music forms - ...