KEF KUBE between Ayre preamp and amp?

I've been driving my KEF Ref 107/2s with Parasound JC 2 BP - 107/2 KUBE - JC 1 monoblocks, but I may want to use Ayre KX-5/20 - KUBE - VX-5/20 instead.  I realize Charles Hansen discouraged inserting anything between an Ayre preamp and amp, and I did have a poor experience when I tried inserting a Bryston 10B crossover -- some of the sonic magic seemed lost.  Am I likely to experience the same thing if I insert the KUBE?  Any suggestions beside eliminating the KUBE?

db