Would like to know more analog crossovers similar to Fostex EN3000 and EN3020

Yes, do you have it?

Sorry, I don’t own one anymore, if you interested, check out hifishark.com

https://www.hifishark.com/model/pioneer-d-23

They appears from time to time for sell on hifido and yahoo auctions japan... the EN3020 appears to be amazing, even the scale down version maybe it's very nice.

recently i discovered a sony that i had no idea of the existence, it's not the one from esprit series, this one: Sony mu-c031

http://www.hifido.co.jp/KW/G0106/E/850-50/C02-13152-13313-00/

i think this one must be more difficult to appears...

cosmicjazz@ let me give some advice , i dont think you need this complicated unit with adjusting crossover point , crossover slope etc. the is more for DIY guys, if you want to finish you project  instead   spending
time on this forum or online. and enjoy to listen nice music on you 3 way 
active crossovers speakers , instead  play games   adjusting  crossover, you need 3 way  prefixed active crossover  https://www.xkitz.com/collections/active-crossovers-and-bi-amplifiers-1/products/linkwitz-riley-3-way-active-crossover-fully-assembled-xover-3 ,  for choosing amps i also have suggestion , but you need somebody to help you ( DIY electronic guy)