While not a "one-knob" plugin, Kotelnikov is widely considered one of the best free compressors on the market. It offers high fidelity and a "feed-forward" architecture that can mimic the transparency of the Renaissance series.
The Secret to Pro Vocals: Waves R-Vox (Why Everyone is Searching for It)
If you are looking for that specific "RVox sound" without the cost, consider these options:
While there is no free standalone version, you can access RVox legally on 64-bit systems through these methods: rvox plugin free download 64-bit
