What would be the best for Andra?

Hi! Everybody.
I'm in Korea and it's not easy to make try many amps to make sing my Andra spakers best 'cause audio dealers would not lend me them here even I've been their many years customer.
If there is anybody who experienced these speakers, please share your idea.
(I know Hi-fi is very personal taste. But I tried many amps but din't get any luck yet.)

The equipments I'm using now are like these:

Power amp : Pass X350
Pre-amp : Levison 380S
Cd Transport : Levison 31
D/A : dCS Delius
SPK cables : AudioQuest Dragon SE
Inter-Cables : AudioQuest Anaconda balanced
Digital cable: Transprent reference

Thanks.