Thanks for the reply. I have downloaded the app with all the tone prints and been testing the past 2 days with all the presets to no avail. I did find out some functionality changes how the knobs work for different tone prints but it's a bit confusing so I was either looking for advice on how to set the knobs to get closer to an Ampeg SVT Classic tone or how the knobs function in the default setting.
Yeah that is one thing about the construction of this is that the drive and compression knobs are merely blend controls, adding more or less of the effects into your mix. Give it a couple of days of tinkering (drop you input level and crank the drive/output?) and maybe someone else can chime in. I don't try to make a specific brand sound so I'm probably not the best resource on this one