Silimtao - how exactly are you recording...? I assume you are running Audacity and amplitube together, and importing the BT into Audacity ( using project -> import audio ). If so you can raise the gain on the BT separately from amplitube.

You aren't importing the BT into amplitube and then trying to record the output of that, are you...? That doesn't work well if I recall.

And you are using ASIO drivers for the stealthplug?

My setup is a little different, but should behave similarly. I use a Toneport feeding Gearbox software ( same thing as amplitube ). Load the BT into Audacity, set Audacity to record the Gearbox output & go.

Hope you get it sorted mate.

As far as tone goes, I tried Amplitube and hated it. Then again, I was also disappointed with Gearbox until I found some presets I liked from other users - the ones in the box suck. Maybe search the forums for user presets for Amplitube?