I have a Marchand XM-9 Deluxe and am very pleased with it and active systems. The quality of the parts is fantastic, although they aren't much to look at. They offer 2,3 and 4 way, both fixed and adjustable, in both tube and ss. Sean is quite right about the ability (and perhaps desire) to use whatever you want if you assemble it yourself, wire, connectors, upgraded power supplies (My next project) etc, or you can have one built for you. Building one is very simple, it takes about 8-12 hours (I'm slow, I know). They come with RCA or XLR inputs and outputs, so you won't have to deal with the 1/4 to RCA adaptors, which you have to use with some of the equipment you have found. I had a Furman crossover prior, just to try out active crossovers and was sold on the idea. The Furman, although pretty good (I upgraded the OP-amps) leaves much to be desired, compared to my XM-9.