That's cool, just wanted to point out that people might be getting wrong impression that they can get any amp they want as long as it's DSP Behringer.
There are other good and better options, including often overlooked
SMSL SA 98E, that would work wonderfully for smaller transducers like Rechon and Aurasound with lots of headroom to spare.
DSP related stuff, again my own experience and feedback I got from people I know, that most just don't bother with that. Most small transducers work out of the box without need for any fine tuning, I understand what you are saying about BK Mini LFE piston pang, experienced that myself, in my opinion it's just bad design, but I've seen some
mods taking care of that and for myself was able to get rid of it by just cantilevering them on these
supports, reason BK most popular Gamer2 model comes with that springy mounting arm.
Plus there is always software DSP option, as we can set high/low pass filter, frequency range, gain, and to which channel individual generated effect goes in SimHub and to some degree in SimVibe, and if ever needed can use additional EQ option in soundcard or in that APO software you mentioned.
And for examples of other options for bigger transducers, I use this
Crown XLS-1002 for BK Mini LFE, it's quiet as fan only kicks in when it gets overheated (which is almost never), but that just one example, I am sure there are better, or cheaper options including multi channel ones like Emotiva and such.