With the amount of gain it has, it works fantastically as a preamp. Stick a cab loader after it and you have a very flexible hi-gain amp. Optionally, add a power amp in between, like the Ignite TPA-1, for some added saturation and power tube character.Read Review
The initial settings don't sound great when used as an overdrive but with some tweaking this VST sounds excellent. For use as an overdrive for a VST amp you would want to lower the gain (reign) to 0, set the emphasis frequency (destiny) to the max of 2k and from there do palm mutes while lowering the knob until you find a sound you like. Or, leave it at 2k and raise the Air control at the bottom which gives some RAT vibes for a sound that will cut through any mix and invigorate muddy amps.
The lower mids are not changed with the tone switch at neutral so you just get a tighter bass response and more cutting high mids/treble without messing with the lower mids which is a sound I really like (when compared to tubescreamers for example). There are also a lot of knobs and switches to experiment with.
One thing though, I think there's a bug with the stereo processing of this plugin, it doesn't sound truly stereo and the faders also show that one side has higher volume than the other when stereo is activated, but hopefully this can be fixed. Still an easy five stars from me.Read Review