Hi All.
Thank you again for reading my problem and providing possible solutions. I love this forum.
I have self resolved the issue, and the problem was that "it was not back to my original setting."
I use lan isolator which improves performance of my MS200. This device need to sit between my router and MS200, but it turned out that I have accidentally installed it between MS200 and the reviver (speakerlink), and created this problem.
My two observations:
- Lan isolators should never be used in speakerlink (guess lan isolators recognized small and weak signals as jitters)
- Lan isolators clearly reduce jitters and digital noise, and does make difference in sound.
Anyways, I am happy that the problem is gone, and continuing to love my built to last DSP6000s.