Multi-Out will enable you to route each part of your drum set (kick, snare, toms, etc...) to different channels within Logic Pro. After executing this function you will be to process your drum tracks with your plugin library.
The following information will provide a step-by-step walk-through:
Please start by creating a Software Instrument Track and instantiating the SSDSampler on the first insert.
Logic X users can find the SSD Sampler by clicking on "Instrument" and navigating to their AU Instruments Menu.
Logic 9 users will need to select the "Input" within the I/O menu.
When selecting the SSD Sampler choose the "Multi-Output (8xstereo, 8xmono)" option.
Next press "X" on your Keyboard to bring up your mixer. You will notice a "- & +" sign added to your SSD Sampler channel. Go ahead and press the "+" button 6 times to create 6 auxiliary channel strips.
I have named my aux tracks accordingly (see picture above). These tracks will correspond with the mixer within the SSD Sampler.
Choose a mono input for your Kick and Snare and stereo inputs for your Toms, Cymbals, Overheads, and Room tracks.
You can do this by clicking on the "Input" menu.
Within the SSD Sampler I can route my tracks to each Aux track.
SSD Sampler 17 = out 9 mn
SSD Sampler 18 = out 10 mn
SSD Sampler 3-4 = out 2 st
SSD Sampler 5-6 = out 3 st
This is done by clicking on the bottom of the mixer. I have routed all Kicks to out 9 mn, Snares to out 10 mn, Toms to out 2 st, Cymbals to out 3 st, Ovhds to out 4 st, and Room to out 5 st.
Feel free to route your tracks differently as this is what works best for my needs.