Bi amping is even common in most powered studio monitors these days. I know mine are.
I almost missed this; thanks for pointing this out Brian.
Here's what my monitor owner's manual says.
The bi-amplified design, with individual power amplifiers for the low frequency and high frequency
transducers, uses efficient high-output Class-D integrated power amplifiers to provide high SPL (sound
pressure level).I'm thinking there may not be an absolute straight line back to Enstwistle on this (digital switching vs analog) but I'd like to believe that there is at least
some connection . . . not sure.