Interesting, so as you mentioned a bit further up, the 'work' that these things do equates to more power drain on the sub, makes sense, no such thing as a free meal.

So in theory, if you had the dual core version that does the whole system, that same drain would apply to all of it (or depending on where the antimode needs to deal with frequencies anyway).

So to extrapolate things a bit, wouldn't decent room treatment be the most 'effective' way of dealing with room modes etc? (Albeit more work).