Koetsu Cartridge on Acoustical Systems Axiom!

Yes.

You can see it in my Sytem.

And is it a real excellent match or would you recommend other systems with better synergy with the Axiom?

I think that is a bad combination. The Koetsu is perhaps the lowest compliance cartridge on the market. The Axiom is a lighter arm and the head shell is not what you would call a stiff design. The Axiom would be better with a cartridge in the 13 to 20 um/mN range. The Koetsu is 5 um/mN! You could add mass to the headshell but you had better have a good record clamping system. I have listened to the Coralstone version but not in that arm. It was a Kuzma 4Point 14. Nice cartridge but not the best tracker. 

The Axiom is a lighter arm and the head shell is not what you would call a stiff design. The Axiom would be better with a cartridge in the 13 to 20 um/mN range.

 
This is not correct. The Axiom has an effective mass over 20g and will match the low compliance Koetsu range very well.