Adding 5 types of valve saturation to your tracks, preamp is the core effect of the Summing Tube Amplifier series. STA (Summing Tube Amplifier) uses two signal paths, one is processed by modulation or spectral change and the other is not processed. These two signals are mixed on a vacuum tube. That gives “ordinary” effects like Flanger or Phaser, really unique and warm character.
The valve saturation colour depends on the Mode selection. Changing the type of the tube circuit, affects the tube working point and frequency response.
There is some low frequency noise in some tube modes. It is a natural result of the tube configuration we are using in STA.
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