TNT is a Distortion/Saturation plugin. TNT was originally created for audio processing on drums (individual sounds and loops), FX and bass sounds.
TNT comes in 2 flavours: single band and multi-band. Both have mono and stereo components so we are talking about a total of 4 VST plugins. Both share the same saturation/distortion algorithms but the single band features a Tone knob that is not present in the multi-band version.
This later features a transparent 6dB crossover filter that separates the low and high bands where you can use different saturation/distortion algorithms on each band. There is also a balance knob that helps to level both bands before final output.
Midi learn (right click on the knobs).
Modifier keys: Shift (fine tuning) and Control (default value).