Preamp with built in active analog crossover and other ideas...

Hello to all, recently I was thinking about some devices that can be a nice idea to be builded.. according to my researches, not found any devices with this capabilities on the marketing... If such devices exists, let me know..

Preamp with phono stage + analog active crossover built in (2 or 3 way)

Preamp with phono stage + DSP + Room Correction built in.

Multi Channel integrated amp with phono stage + analog active crossover built in (2 or 3 way)
 
One of the main issues with active crossovers done in analog circuitry is that the crossover frequencies are hard to make variable without 4 or 6 gang pots with good tracking, so the circuit is bound to a fixed set of crossover frequencies, ie specific to a particular loudspeaker.


This suggests the active crossover comes with the speaker, not the preamp.
 
Right now I use a minidsp as a preamp. It has one analog and 3 digital inputs and all the outputs I need. There are models in the range with Dirac room correction as well. But they are not super cheap when you add those features.