Does a new cd transport require break-in time?

I  would give a hour or two to warm up and you are good to go. If a solid state device drifts audibly in performance over 50+ hours then it will probably never stabilize reliably and you may as well return the faulty device.

Oh, please! Give me a break. Even Oppo, one of the largest manufacturers, recommends 200 hours of break in. 

geoffkait

... The dreaded Double Blind Test raises its ugly head! 👹 The threat of double blind testing has done a great deal of harm to the hobby by preventing progress and suppressing innovation and creativity. Double Blind Testing is the favorite weapon of died in the wool pseudo skeptics and knuckle dragging naysayer ...

That sounds a little bit harsh to me. I think double blind testing, such as abx testing, is a very useful tool. But it is just one tool. Oddly, many of its advocates insist that it is the only reliable way to evaluate audio components, and now williemj narrows that even further, proclaiming that "comparing a product over the course of many hours is an invalid methodology."

Double blind testing has its place in many fields, including audio. But for actual audiophiles, I think it is of limited value. If it is applied with a strict time constraint, I think its value is near nil.

@cleeds I agree completely. Changes are subtle and systems are complex. You have to know a system well before you'll be able to hear any changes. From there it takes more time to decide exactly what those changes are and whether they are an improvement or not. It takes time, the mental space to listen and be focused and a lot of different music to ascertain subtle changes in a system.