Audiffex turned their famous plug-in for Logic Pro X or Garage Band into an application, that turns your Mac into a Gallien-Krueger Bass Amplifier. There's no need to move around heavy stacks for every show. Simply take your laptop with GK Amplification 2 installed and use it instead. The application can be easily controlled by any MIDI controller.

Amplification
The LE version of GK Amplification 2 contains the exact model of Gallien-Krueger MB150 amplifier. While the Pro version (also available on the Mac App Store) contains exact simulation additional two models. All the functions of the original amp are available. All controls work the same way as their hardware counterparts.
The amplifier is plugged into a great GK bass cabinet (the Pro version contains 9 models).

The Track Player
GK Amps` advanced track player lets you play along with your favourite artists and learn their songs. Speed control alows you to slow down, if you can`t make it, or even speed up. Built in recorder will keep every new riff safe. Record dry bass sound, processed or even mix with the track player.