Line 6 produce digital modeling guitars, amplifiers (amplifier modeling) and related electronic equipment. The company was launched from Fast-Forward Designs, where pro audio products were developed. Legend says the company only had 5 phone lines, and the guitar products were developed in secret, so any call on "Line 6" was a secret call about the guitar or amp products. Their current product lines include electric guitar online and acoustic guitar online, bass guitar online, and you can buy guitar amplifier online with the Line 6 brand. You can also buy pro audio online as they produce USB audio interfaces and guitar/bass wireless systems. With a long history of ingenuity and passion for innovation, Line 6 has changed the industry.