Glad to be part of that annoying sense of guilt at the back of your mind :) For me it's less about modeling the tube and more about checking the rest of the ci

Glad to be part of that annoying sense of guilt at the back of your mind :) For me it's less about modeling the tube and more about checking the rest of the circuit around the tube if that makes sense. Does the tone control do what I want, and so on. Personally I'm looking to verify relatively simple parameters of a tube in a circuit: gain, whether it's operating in the linear region given a particular bias, that sort of thing. If the model was simply a representation of the tube's characteristic curves that'd be good enough for my purposes. So being SPICE-like would work ok. After all that's what I'm doing now!