Hi
I've developed a new LV2 plugin, the ValveCaster.
It's a tube based boost guitar pedal simulation.
It adds some overdrive and tube compression along with boosting the signal.
It will fit perfect in your signal chain before your guitar-amp-simulator.
It could as well colorize your synth or your Bass to become a "tuby" sound.
It is published under the GNU General Public License v3.0
You can get it here:
https://github.com/brummer10/GxValveCaster.lv2
regards
hermann