Freeware - PreFET Transistor Saturator VST Plugin

https://www.accentize.com/PreFET

PreFET is a Machine-Learning based transistor pre-amp emulation which was designed using the same concept as PreTube. The included artificial neural network has learnt to precisely imitate the transistor pre-amp stage of a 70s tabletop cassette recorder. Depending on the Drive-Setting PreFET can colour your sounds from subtle analogue saturation to heavy overdrive.