Infinity kappa 9 ebay crossover

I have just recently purchased two pairs or kappa 9's. does anybody have any experience with the crossovers that are being sold on ebay?they claim to make an easier load for the amplifier.that in it self Is very easy to believe.they also claims to give the speakers a better sound.I would like to hear some first hand experience.i would also like to hear of anyone who has had the original xover's rebuilt and where.also any other recommendations to improve on this xover.I hope to gain some good info here thank you