Line 6 launched in 1996, with their first digital modeling guitar amplifier, the AxSys 212. The company underwent a rapid expansion in the early 2000's due to the success of their Pod product line, which isolated modeling circuitry from the AxSys amplifier.
Digital modeling attempts to recreate the unique characteristics of musical instruments and pro audio gear. Early Line 6 products used digital modeling to emulate the signature tone of a guitar amp/speaker combination. Further development of Line 6's modeling technology has extended the emulation to include numerous guitar amplifier / guitar cabinet combinations, guitar effects, microphones, and even different guitars and other fretted instruments themselves.
Though Line 6 began with a modeling guitar amp, their breakthrough product line was arguably the POD guitar processor line and its later variants, but this modeling technology has been the foundation for most of Line 6's products, from guitar amps to software and computer audio interfaces. Line 6 has an active user community, and provides software that allows users to easily download and share patches or device settings for many of Line 6's products.
In early 2008, Line 6 acquired Xwire, who had introduced digital wireless systems for guitar. Further developing this technology, Line 6 developed and introduced a family of digital wireless microphone systems in 2010.