I passively bi-amp my Def Tech BP7000SCs with two Acurus 200X3 amps.
I would love to think that it makes a world of difference.
However, I truly cannot tell a difference.
But, they do look great, and they are great for impressing those who care
I've read about bi-amping and bi-wiring.
Bottom line, bi-wiring is absolutely a waste of money and time.
Bi-amping (passive and active) has merit, but the question is, is it significant?
If we did a A/B comparison, would be able to tell a difference?