Ayon manufactures very good audiophile quality gear.
That said, their service is abysmal. Only one distributor/dealer is available in the USA, and unfortunately, the owner is a jerk (really, a super jerk) - so much so, that I could not even get other dealers to obtain an item from Ayon to sell to me. The dealers did not want to interact with this guy. How quickly a bad reputation spreads!
I sent an email notice to AYON International - three times, all with no response. Even great gear needs to be supported properly to be considered great gear, and this owner of Ayon USA simply does not care about anyone or anything except, presumably, his own bottom line.