SKnote have released DualR, their first "High-Gain" guitar amplifier.
Here's what they say:
A model of one of the roots of the high-gain-amp concept, carefully modelled on a component basis after a couple of Mesa Dual Rectifier units. It contains several parameters to get versatility (amplifier Red, Orange and Blues modes, feedback control, alternate voicing modes, solid state or tube power supply).
The new cabinet model, with two slots, sets a great level of realism thanks to its physical models and also the option of loading external IRs for what is called "Sublymating", a sort of "self-tuning" of the cabinet models with the loaded file as a target. Better and more realistic sound, also thanks to the integration of amplifier and cabinet models, and almost infinite options, thanks to the cabinet morph parameter that gives an unlimited amount of mixes between the two cabinets.
Mix and match speakers, cabs and mics, they'll always sound good (if you like the starting points).
Available as VST/AU/AAX for Windows and Mac OS X systems.