Thanks to Rachael for a fast intervention for a minor shipping problem. Thanks to Yulong for fast shipping and use of DHL.   I have a high end audio system wich can reveal the quality and the weakness of an audio component. I received the Yulong Sabre D18 and hurried in connecting it with balanced interconnects to the audio system.  Alas, the sound was poor, thin, and had nothing in common with a good DAC.  Was it the false analog copy or lack of presence some people wrote about saying it is not a revealing DAC, and surely not a usable DAC for...