The new Trio (and presumably soon the Uno and Duo) is fully active so needs only a streamer or other digital input – or analogue via its ADC. The built-in electronics include electronic crossover, DSP for room correction (presumably / hopefully bass only), DAC and power amps for each driver. In their active Zero speaker AG use Class A for the mid and top but Class D for the bass. The new Trio uses AG's “iTron” amplification.
I think this is a very interesting, and a very decisive, move by AG! (Why wouldn't AG offer as an alternative option for the new Trio the improved frame structure but without the built-in amplification for the midrange and tweeter?)