The same technology has been used to create the Guitar Rig 6 and its parts.

Native Instruments has developed a circuit modeling algorithm by which it creates realistic and in-depth emulation of the amps.

some of these virtual processors have impulse responses from Own Hammer and 3 Sigma Audio and great saturation algorithms. The pack has emulations of guitar amps and processors like Chicago, Bass Invader, Fire Breather, Matched Cabinet Pro, etc.