Hi all,
Im a bit of a tweaker when it comes to digital amps etc and have stumbled across a setting that I thought I would share.
Regardless of the type of profile used (clean, crunch or lead) and regardless of the other Stack settings used, if I increase the "Clarity" to 7.7 and the "Tube Shape" to 10, to my ears it seems to have the effect of adding some tube type warmth and attack to the sound and to the feel of the guitar.
It does tend to raise the treble side of the EQ so I increase the bass a little to compensate.
Anyway try it out and I hope it helps
Cheers