After my many years has estimated Fiio E5 given up the ghost due to a defective battery, I treated myself to the E12, the new top model from Fiio. In terms of sound quality of this represents a significant increase compared with the E5. Unfortunately, it seems at present significant problems in the manufacture give. The first model did not let himself Laden and provided significant noise. The then ordered replacement unit could load, but even with this, there was a strange loss of battery capacity after only one day without use. For a product in this price range and the promise of premium character this is not acceptable. Too bad, the sound of the E12 can really convince.