Dating a general music co amp
Here's a page with photos of some actual recording sheets (for "Anyhow" among others) where you can see how the Sans Amp was set. The Sans Amp GT2 pedal was made to be used as a line-in effect between a guitar and a mixer (hence the name; "Sans Amp" which means "Without amp").I play through my 1968 Fender Showman which has a very clean sound at all volumes. I never did care much for the sound of line-in recordings of guitar though and that's why I only use it as a "normal" pedal between my guitars and my amp.Therefore digital emulation is often the way to go.The big exception here is - of course - microphones.This would be a great reason to buy the book :-) HOWEVER!
Quite on the contrary actually: If it hadn't been for cheap hi-res sound cards, I could never have afforded to experiment and record as much as I have.
It doesn't have to be vintage at all, but they do look pretty cool. The distortion (which is where you get the right sound from) changes dramatically with change of volume.
Actually I started out playing a vintage Vox AC 30 and it wasn't bad at all. That's very impractically when you play live, where you have to adjust the volume after the size and acoustics of the place where you playing.
Still, live I don't see why there should be any difference, if you set your amp right.
Recording: Nowadays most recording take place in the digital domain (Remember that the microphone itself, will always be analogue).