I heard I nice improvement going from the Audiolab 6000 to the Project CD Box RS2 T. I didn't level match the and blind compare lol but I did notice things sounding better more real and less digital. I also notice that playing a CD from the disc through my DAC sounds drastically better than streaming it through Roon.
If the DAC is the same, how different do CD transports sound?
One interesting topic of discussion here is how audible the differences are between CD players when they are used as transports only — or when they are only transports to begin with.
In other words, in a comparison which keeps the DAC the same, how much difference can be heard between CD transports?
This recent video by Harley Lovegrove of Pearl Acoustics provides one test of this question. It may not be the ultimate test, but he does describe the experimental conditions and informations about the qualifications of the listeners.
He comes to the main conclusion here: https://youtu.be/TAOLGsS27R0?t=1079
The whole video is worth watching, I think.