Ok guys, I'm going to tell what happened today with my iBasso DX220.
I purcheased this device from Amazon UK but sold and shipped by Advanced MP3 Player store.
Today I unboxed the product and I noticed dust, scratches and wear on the lateral screw of the stock amp module. It is clear that I received an used unit.
Apart from the sad news, I have to say that this music player is amazing. It heats a lot, maybe the battery life is very short, but the sound is incredibly amazing. I never heard such a quality of sound. I tested the DX220 with the Sony XBA-N3 and Mee Audio balanced cable. Furthermore I installed Neutron and the pairing is unbelievable. Sorry but I still don't have words to describe everything
I am still waiting for the seller's feedback because I asked a partial refund. If he does not agree with my request of compromise, then I will return the package.
Can you suggest a good store where I can be sure 100% that I will get a brand new product?