LePou Plugins has released the LE456, a free amp effect plug-in for Windows.
Here is my latest amp sim. It’s a preamp sim roughly based on a famous German gear. It has 2 channels and 2 modes per channel. Each channels/modes share the same features.
Apart from the usual tone controls (drive, low, mid, high and contour), each channels/modes offer two different tone stacks that can be accessed via the focus switches. Bottom and bright switches can be used to boost the low and the high frequencies respectively. On the low gain channel only (Clean/Crunch), the effectiveness of the bright switch decreases with the gain settings.
The LE456 is available as a freeware VST effect plug-in for Windows PC.