Yes, I don't think anyone will claim that biwring is as good as biamping - the problem with multiple amps is cost.
sfall - no manf. would use an amp for every driver with a Xover between them - you would use DSP ahead of all amps to deal with this, as meridian has done since the 1990s - yes, expensive
sfall - no manf. would use an amp for every driver with a Xover between them - you would use DSP ahead of all amps to deal with this, as meridian has done since the 1990s - yes, expensive