I just got a secondhand Tyrant.
I don't think it's stock as it has a switch that changes the sound. I believe it's a Meathead and the switch changes it from the light to the dark version.
Frankly, it sounds ace. The light setting's really retro-ey, but there's quite a bit of bass lost. I reckon it'd be good for doing the clavi part in Superstition, for example. The dark setting is a monster. As far as I can tell there's no bass loss. It also seems like it'd stand out in a band better than a big muff, but I haven't tested it yet so no guarantee.
I'd have to say, for the price it's pretty darned good. Pretty pretty good.... I'm definitely interested in trying some of the others.
I'm not in work today but I'll get some clips up tomorrow.