RubyTube free vst simulates tube preamps for those that can’t forget. If you are missing that subtle sparkling and compression that you get when using ancient audio equipment,
RubyTube is a real time, digital tube amp simulator. RubyTube simulates the saturation effect that can be found in audio equipment with vacuum tubes. This effect is usually hardly noticable but it is responsible for the classic tube sound. Sometimes its just a sparkle on the voice and a slight compression of drums and bass that makes the difference between a neutral recording and a warm and full sounding song.
Simulating tube sound with non-tube equipment is difficult but it is possible. RubyTube is not the first such simulator but compared to other tube simulators and distortion units, RubyTube has a very high resolution and a well-balanced spectrum of harmonic distortion.