Will be interested in your assessment of the new clock as against all the others you use or have used in your system(s). I’ve had the OP21 since early last Fall and have been happy in its performance with the Vivaldi Clock and an etherREGEN switch. As with all things I wind up testing in my system, it comes down to a) do I note any difference in SQ; b) if I do, is it positive in all aspects c) or, does it take away something I felt was important for SQ.
Recently I added a pair of subwoofers to my system with the goal of improving the way my primary speakers “worked” within my room. I found that the pluses came but with a higher level of room “excitement” that worked against the overall sonic balance. Then I put A/V Roomservice EVP footers under the subs, about week ago, and these tamped down the room effects considerably. Now I hear the SQ I’d hoped for gains w/o the nasty room effects I had before. Ain’t this a fun hobby???