You should try the Wilson Sophia speakers, it may be the best speakers under $20K other than the JM Lab Mezzo. It is better in the bottom end definitely. Mezzo may be more transperent in upper but the equipment for my audition and comparison is not up to par also.
As for the amp. W5 is good but should also try Pass X250, should be perfect match for Sophia.
As for the amp. W5 is good but should also try Pass X250, should be perfect match for Sophia.