I'd like to ask other xDuoo Nano D3 users if you experienced bass interference and distortion while listening with EQ settings: Bass or Jazz? I notice something like this with my one and I'm very suspicious about this device. I get another piece of D3 and there is the same fault! Can you guys check this out with your pieces? Take music rich in bass, turn EQ into Bass or Jazz and check it out. Thanks a lot and I cannot wait for replies.