older CD transport vs newer ones.

"All transports that conform to the CD Redbook standard will output the exact same data bits regardless of whether they come from cheap DVD players, CD players or boutique high-end transports. That's the Facts of Life, kids!"

This in my opinion is poor and misguided advice regardless of how well meaning and sincere it may be. DACs get much more coverage and attention but I believe that the quality of the CD transport is as crucial to achieving exceptional sound.

@ejlif I would encourage you to at the very least look into and learn more about the Pro-Ject RS2 CD BOX Transport. In my opinion you should get the best quality transport you can comfortably afford to pair with your high level dCS Rossini and extract its full potential. Contrary to what some others may espouse,  CD transport quality is vitally important and takes no back seat to the DAC.
Best of luck, 
Charles 

https://forum.audiogon.com/discussions/a-phenomenal-new-cd-transport-pro-ject-cd-box-rs2-transport
@ejlif,  very  good information and feedback in this thread.
Charles

I can think of three components that vary from transport to transport:

1. Error correction…the better transports can better correct things like scratches, pinholes and other defects.

2.  Jitter.  The better transports will significantly lower the amount of jitter.

3.  Noise.  The better the transport, the less noise that gets output along with the 1s and 0s.  This includes both noise generated by the transport itself, and any induced noises by external vibrations.

have I neglected any other factor on how their sound might differ?

I still use a TechnicsSL-PS840 into a Cyrus Dacmaster (sometimes still use the discmaster transport as well but I think it's living on borrowed time) - the build quality certainly feels good, better than my CXC which although good has been a disappointment compared to the brilliant CX amp and streamer; the tray is nasty, the display looks cheap and you can see the plastic inside- track access is pretty quick though but it just doesn't feel like it will last

OK the Technics digital output is not in the same league as using the Cyrus but as a transport it's a joy to use- beautiful sliding tray, direct track access, good remote, lovely display, headphone output, only downer is it's optical only digital out. It is honestly like an old Mercedes and feels like it will go on forever.

I totally agree, take a very close look at the Pro-Ject RS2 CD BOX Transport. I truly believe it will improve your system.