What I mean is for some of us, we like to combine tubes and solid state in the same system. Personally, I prefer a ss amp with a tube preamp. I realize recently the lines have blurred between the two camps, with each taking on some of the characteristics of the other. I have heard sota tube cdp/dac, but also sota ss or even hybid cdp/dac. Does it matter in a mixed system where the tubes are? I was under the impression tubes should start first in the preamp. Does it matter with today's gear?