If you need that loud, controlled, thick vocal sound immediately, these free VST plugins will get you 95% of the way there.
If you can't get the real thing, here is a signal chain using stock plugins to clone the Rvox sound: Rvox Vst Plugin Free - Download
Disclaimer: Rvox (Renaissance Vox) is a well-known vocal compressor/leveler concept popularized by Waves’ Renaissance Vox (R-Vox). There are multiple plugins and clones that emulate simple, single-knob vocal leveling/compression behavior. This guide covers what “Rvox VST” typically refers to, legal/ethical considerations, safe download options, alternatives (free and paid), installation, usage tips, troubleshooting, and recommendations. If you need that loud, controlled, thick vocal