Thanks a lot!
No, both are DSM "1", I checked it.
I need a new receiver for my XX4 (my SR3000 now is on my Hyper ST PRO) and I found a SR300 for 40 EURO (shipping included to Italy) on Ebay. I think it'll work fine with my DX2.0.
A nightmare is an optimistic vision...
Recently I found a way for reduce problems for shipping from USA to Italy.
Simply, NEVER ship as GIFT and declare a value of 25 dollars /20 Euro at least.