Eldartford, no, IMHO.
That's why I said that turning the amp on was optional.
He could just run the cd through the preamp, with the amp off.
When I was burning in my phono stage, I played the Granite Audio CD on repeat 24/7, when I was not listening to vinyl (amp and preamp were off). Obviously when I was listening, I listened to the cartridge with the amp and preamp on. That's how I could tell how much it opened up, even after just a couple of days of running the cd.
FWIW, the phono preamp I bought was the BAT VK-P10SE w/ Super-Pak. Those huge oil-can caps take quite a few days to burn in right. It was amazing how it sounded after a week of burn-in compared to right out of the box. Night and day, so to speak.