I had received the DAC in good condition, tested with my Senheiser HD598, definitely sound better, especially after I adjust to add in a little bass, and I can hear louder, as compare to low volumne on my PC onboard sound card. In conclude, worth the price for this DAC, i feel no over bright problem, no distortion problem, all just fine.

One more question, i see there are 2 red LEF lights on the DAC, how comes only 1 is ON? How about the other? And then what is the SPDIF about? I see no SPDIF when I plug in the USB DAC into computer, I just use like that, any difference with the SPDIF?