Thank you @PAR , and also @keiserrg for your prompt reply.
Allow me attach the links from where I have got the information, although it was talking about Bartok. I do think it’s the same on Rossini.
https://dcs.community/t/does-bartok-needs-an-audio-re-clocker/5932/2?u=adamzhang
https://dcs.community/t/does-bartok-needs-an-audio-re-clocker/5932/5?u=adamzhang
No doubt an external clock might always helpful on SQ, my question is just regarding what’s the most efficient way with less expense.
Adam