Thanks for the great review.
I have many clients who have taken the
AntiMODE 8033 plunge who have said the same thing.
The level of improvement it makes is relative to how "bad" your room is, but most say it is well worth the small price. In fact many claim overall it makes one of the most drastic "cost to result" improvements in their systems/rooms.
VMPS bass is all about accuracy and realism with low distortion and true harmonics.
With Brian's attention to drivers, tunability, accuracy, harmonics, and dynamics, this little device is "
icing on the VMPS cake".
Where can you get this kind of improvement in a system for $350

THE BASS GOES LOWER WITH FAR MORE ARTCULATION, MUCH MORE THAN EVER BEFORE. EVEN THE RM-30Ms ARE FAR MORE REVEALING.
And as you mention above and Brian has often commented, fixing "ANY" particular frequency range can also have a very positive effect on the other frequencies.
This works via
harmonic interaction. All wave forms form harmonic interactions with other waveforms. Fixing a frequency or range of frequencies to be more accurate "improve" their harmonic relationships.
Voila! Better sonics from top to bottom.
Thanks again for your comments.
In case it is not clear from my posts and comments, this device is not exclusive to VMPS Subs. I have filled several orders for non-VMPS subs and systems too with pretty much the same feedback.