The TesslaPRO mkII, from Variety Of Sound, is a “transient aware signal saturator”.
Like all of VOS’s stuff, it’s about the best you can get.
“Based on stateful saturation algorithms, it features an internal expandable ‘color model’ architecture and right from the start five different models are already included being three different ‘console style’ models plus one generic ‘tube stage’ and a ‘tape warmth’ saturation model.”
“It also introduces advanced DSP processing which is designed to have it applied across the entire mixing stage by featuring zero latency processing and further optimized assembler coding yielding a ~40% lower CPU footprint compared to its predecessor. Its very unique transient control appears further improved, vibrant 2nd order harmonic generation was added and better support for gainstaging is included now.”
I can’t say enough good stuff about VOS’s compressors. For free stuff they’re pretty much ruling everyone at the moment. Get into it.
Available for Windows.