Ableton Audio Effect Rack tutorial for beginners by Reid Stefan Realest Puppet In the Game. This audio effect rack complete guide breaks down every button and feature for beginners, and demonstrates how to create your own audio effect rack presets for mixing using panning and volume in the rack. Ableton Audio effect racks are your short cut for parallel compression, adding a dry wet knob to any plugin, or panning your plugins. You can turn any plugin into an audio effect rack by using the keyboard shortcut COMMAND+G on any plugin. Mixing is all about combining effects and balancing sound together and Audio Effect Racks give you the most flexibility to mix!