Analog Synth sounds experiement.... Trying a technique I feel will sound better in your Caustic mix wether playing high notes or low notes, trying to maintain a sonic balance--not sounding too shrill on top on high notes, and not to muffled on low notes.
Not an exciting sound, but may be useful somewhere in there.

Add a Stereo Delay or long-tail (no damp) Stereo Reverb for fullness

Stay tuned for more...