Thank you. I will check that when I back to home. Will you turn off your audio PC? I also found another weird stuff. When I disconnect the power and connect USB, the device will be "turn on". The Operate, Phase and Tube LED will be turn on. It seems very weird.

Recently, I bought a Minimax DAC plus. The sound is great. However I found a weird thing. When the DAC connected with USB, the DAC can't be completely off. My case is the Minimax DAC plus is connected a music server. I will not turn off that server. When I power off the DAC, the Operate, Phase...