Bi-amping

Bi amping can make a huge difference if you have two amps with different characteristics.  For example, if your primary amp has weak bass, a second amp with good bass powering the woofers would make a difference.

The Cable Company sold me bi-amp speaker wires and said this is better than using jumper cables.  They didn't cost that much more.  Who knows if any of this makes any difference.   

I have bi-wired and bi-amped three sets of passive speakers with separate posts for bass and treble from different amplifiers. To my ears, I have never been able to notice any difference. In my cases, the amplifiers sent the full range to each.

I think there are countless reasons to bi-amp (or not).

One of my setups uses floor to ceiling line arrays using 30 peerless TC9 drivers per tower. The enclosures are sealed (no ports) and have almost 0 output below about 150Hz.
I use a pair of subs and midwoofers per side to take care of the rest of the frequency response (20-150Hz).
Easier for me to bi-amp in this situation, utilizing class d amps with DSP for crossover duty.

Strangely, this setup sounds better to me than when using any of my tube amps. The reverse is true when using my horn speakers…YMMV…

Ok - so let us assume I have ordered an Octo DAC8.

Do I do the active XO with something like J-river, etc software?

or…

do I use some analogue active XO?