It seems to use some phasing technique to enhance the output, but this plug remains hanging in the first snippet of sample-data it processes.
Whatever you play next adds to it.
When setting the staticbuffer option, it behaves a bit more stabile, but the behaviour is not really different.
I had to put a DC offset dsp on the track to keep the audio-level on shape.
It behaves more like a wavegenerator in Renoise.
Just wanted to add that the SpinBug VST (from Betabugs, as well) makes a lot of loud noise when you set it to stereo and put the knob to 0. In other hosts the meters go crazy/clipping, but there’s silence, in Renoise it makes noise. Apart from that little inconvenience the plugin seems to be working fine in Renoise.