PowerAmpTubes, simulation of plain, bare bone, generic Tube Poweramp stacks with different tubes and stacks to select. You may want to use the PowerAmpImpulses plugin, or a EQ for tone shaping. In- and Out-put controls allow to match the sweep point of the input signal. Note that this plugin could easily extend the usual -1.0 <> 1.0 signal range, it's up to you to setup a matching gain stacking. Developed by Brummer