High-pass filter at 80Hz on every vocal track before doing anything else

Below 80Hz on a vocal track is exclusively noise: HVAC rumble, foot shuffling, plosive air, and proximity effect bass buildup. Engaging a high-pass (low-cut) filter at 80Hz with a gentle 12dB/octave slope cleans the low end without affecting vocal body. This single move improves clarity in every mix and frees low-frequency headroom for bass and kick. Do this on every vocal track before any other processing.