I've been scrolling the forums, and I've noticed a tendency for many users to constantly be speculating about new amp models. However, many of the requests seem somewhat redundant. This lead me to wonder whether some of my "dream additions" might be closely related to already existing models.
You would be correct on all points.
Today's tube amps are derivatives of amps initially built in the 40s and 50s, that have had numerous tweaks made to them; Many famous amps that are currently made are just that, applied tweaks to the original circuits.
Fractal models the basic circuits for various amps and then gives us ways to make the same tweaks, so, though a particular brand might not be represented in the amplifier picker, knowing what was the basis, and what changes were made to that circuit can get us into the ballpark. Then it's a matter of making additional adjustments.
Yek's amplifier guides are very helpful, as is searching the internet for the target amplifier schematics because often there'll be associated threads discussing what changes can be made. Match those changes to the options in the modeler and you can get even closer.
If a particular mod can't be found or figured out, asking in the forum can often lead to what parameter needs to be changed, or Cliff will comment to clarify or will turn around and add that to the model.
People asking for a specific model often haven't tried using the tools at hand. The modeler is like a great big toolbox and we can get down to the component level,
if we try.
My personal wish list is as follows: Tone King Amps, Dumble Steel String Singer, and a Vox AC-50. Are there models in the Axe that closely approximate these that I don't know about? If so, please let me know!
I have a Tone King Imperial Mk II and have the rhythm side model sounding very close because it's basically a Blackface Deluxe. The Lead channel is harder because it starts out sounding like a Tweed Deluxe but as the mid-bite is increased the gain changes dramatically, and slides into a Bassman or JTM-45 sound. You can find the preset by searching the forum.
I also have a Mesa Lonestar Special, which is basically a Lone Star Classic with different power tubes and a 1x12 cabinet. Adjusting the Cab to a Mesa 1x12 and changing the tubes in the power-amp results in a pretty good facsimile, good enough that I probably wouldn't be able to tell.
I suspect that the Dumble Steel String Singer would be a similar situation, as would the Vox AC-50.