Amp for Kef reference 1 -Ayre Acoustics AX-5 0 Match?

Curious if anyone has heard the Kef reference 1’s with the Ayre AX-5? I also have an Exasound e62 Dac that has a great volume control and could be used as a preamp.

Want to get as much out of the Kef’s as I can (at 85 db they are a bit finicky and need high current) and looking for an awesome power supply - don’t need a built in DAC or streamer.
I’ve also considered the Coda CSIB as well as the boulder 866.
Any other suggestions, insights or comments would be much appreciated. Looking in the 4 - 5 grand range