"WaveShell1-VST3 100x64 – Free. No installer. Just drop it in your VST3 folder. You'll know if it works."

format represented a significant leap in efficiency. Compared to the older VST2 standard, VST3 offers: Reduced CPU Usage:

WaveShell1-VST3 10.0_x64.vst3 is a "wrapper" used by Waves Audio