Line 6 produces a number of guitar amplifiers (combos and heads), all featuring amplifier modeling software.
In 2004, the Spider II 112 combo amp was released.
 The Spider III sold over 12,700 units in 2011, the 15-watt Spider IV amp was the best-selling guitar amplifier in America.
As of this time, they've launched the Spider IV, which has also been the best-selling 15, 30, 75, and 120 watt amp, according to their website.
Line 6 produces a number of guitar amplifiers (combos and heads), all featuring amplifier modeling software. In 2004, the Spider II 112 combo amp was released.  The Spider III sold over 12,700 units in 2011, the 15-watt Spider IV amp was the best-selling guitar amplifier in America. As of this time, they've launched the Spider IV, which has also been the best-selling 15, 30, 75, and 120 watt amp, according to their website.
Line 6 (company)