Lose Music Signal

[Kangar]

Hi All,
I think it probably has nothing to do with Minimserver, I was trying to register with Audiophile style forum to seek help, but after many attemp, could not register, it keeps coming up with "you did not pass the security check", also not able to send email to the forum, same problem occured.
So, I turn this forum for help, if it is not inapproprite for me to do so.

I have been running minimserver and MPD for many weeks, through Allo Digione signature player connect to Chord Dac, with attached USB HDD, for first few weeks, never encouter any lose signal, no matter how I play it.
About two weeks ago, I started to encounter with lose signal, although it was not happend to every song I play, mostly happend when i switch from album to album, especially when change the file format from DSD to Flac/Wav (but not always not case), I experience 1-2 second lose of signal after few second of music start, it can happend two or three times in the same song.
Recently, I added a ifi idefender to attached to USB drive, it does improve a bit of clarity, but i think it should has nothing to do with this ifi, because when unplug the ifi, the same thing happend.
Not sure anyone have similar experience to share or idea to resolve this issue.
Thanks
Kwan