7-string electric guitar from X Series. Reacting to your every command like a well-tuned racecar, the 7-string X Series RRX24-7 is a slick music-making machine, ideal for modern metal and other styles that require a high-performance instrument, engineered with innovation. We’ve poured all of our hard earned knowledge into this guitar, creating a beast of an instrument that represents nearly 40 years of experience creating extreme tools for extreme players.