Hi, On page 285 of Parts Express's latest catalog, there are line level crossovers for car audio. Of course it says they are "better than a much more expensive electronic crossover". They look like an extended RCA plug, 24kt gold and various Xfrequencies available. They can be piggy-backed to create other options. You plug your RCA from the pre-amp into it, and it plugs directly into your amp.
Anyone have experience with these? More importantly, can they be used for home audio? Or is there a home audiophile version?