Hi. I have decades of instrumentation experience. Some 0.5 PPB analyzers I have worked with use a temperature controlled optical bench to ensure a 235.7 angstrom wavelength. Very precise and needs nothing like days to come to stability. May I suggest the salesman was just letting your brain burn in?
What happened to the Innous discussion
I really wanted to read the Innous discussion because I recently bought, and then returned, an Innous Zen. I had several people listen to it a/b with my Bluesound Vault and the difference was so minor that most couldn’t hear a difference. One person heard a small difference and thought the Zen had more "punch", but also thought it wasn’t as clear and revealing as the Bluesound Vault