Nikolai “NickCrow” Voronin has released TubeDriver v0.76, a free beta Tube Saturator plug-in.
TubeDriver can enrich the signal with warm tube like distortion and is based on real tube cascade modeling.
It has controls for Voltage (working in this version), Drive, Bias and Volume. You can also read some level of volume/distortion from the animated lamp on the GUI (the GUI isn’t much to look at, but because it’s beta it has not yet been a priority so hopefully it will improve in the future).
There isn’t much additional information about this plug-in so just go ahead and try it yourself. I quite liked the sound it produces.
Update 22-11-2006: v0.77 has a less flashy tube. Get the zip file here.