If you listen to the non valve Vox DA5 or Korg REMS modellers the tone/modelling is pretty much the same - The output is less rounded though, so the 12AX7 does something, if not much.
I have had a love hate relationship with the AD30VT - sometimes its just too bassy and not sparkly enough for me (I love Fender amps btw)- I think the secret is controlling the tone by the interaction of the gain and volume controls - in that sense its like the Fender master volume amps where the master volume is really 'Volume' and the Volume is really 'Gain'.
As Gwem said adding a G10V is like adding a 10" V30 - now I would never use a V30 in a Fender, and you loose alot of sparkle with this speaker with the Fender models. But I have real Fender amps for that, so I use the AD30VT for the Vox AC15, which is a pretty good example of modelling. In saying that I'd like to try a Jensen or the new 10" greenback with this amp.
