tElharmonic itself is hard work. one thing i learned from using Odessa is that harmonics get in the way of audio-rate modulation, especially FM, and that tiny amounts of modulation can have profound effects on the output sound. tElharmonic doesn’t provide much control over its additive nature. my gripe with it is the oscillator drift I can’t get away from, with the controls it provides. a wonderful module but it does create a kind of force field around itself.
but I’m surprised to read QPAS is the wrong thing to run it through.
I’ve had good fun running tElharmonic through Rings. Also in shift-register mode rhythmically through a simple LPG.