I am selling my iBasso DX200 that was purchased new from Amazon. It arrived with a small chip at the top as shown in the picture. This unit should go to someone who will mostly use it with an SD card as the WiFi only seems to connect when close to a router (bluetooth is also affected by this defect). Other than that, the unit is in great working order and sounds incredible! I also have AMP3 if you're interested. I'd sell all items together for $650 or the DX200 alone for $550. I would sell AMP3 by itself for $150.