Actually this could be a good application for these new "impulse response
answer" type of plugins. Such you could even emulate your transistor in the
kitchen or your hands free in the car. (Oh, I should get a patent on this idea
before there is a freeware plugin that does this ;-)

Forget it. I thought of this over 30 years ago, and I was hardly the first
person to do so. It's a trivial idea, obvious to anyone familiar with Laplace
Transforms.