Recently, i tried to profile my TL audio preamp (TL audio C1 unit).
After profiling this preamp, it was necessary to add a neutral preamp to sing through the Kemper unit and use this TL audio profile.
I used one preamp of my RME soundcard to preamplify the signal before to go through KPA.
It works very well. I could feel all nuances of this profile, when i sing with a shure beta 58a through the RME + Kemper amp.
I play guitar and sing in a rock band. I make this two things the same time.
I would dream to have a small unit for voice, who would be slave of my guitar Kemper unit thanks to a MIDI cable.
Just a small unit without switchs would be necessary.
At each rig for my guitar, i could associate a vocal rig from the vocal unit.
It would be great !