Video by Cableguys via YouTube
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How to set up parallel compression, distortion or other parallel effects in your song: using a plugin’s wet/dry mix control, a duplicate copy of the signal, or via an aux send/return.
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Parallel compression explained: https://youtube.com/shorts/TOXymP4SrKQ
Parallel drum compression: https://youtube.com/shorts/W48SrYRI2Jc