Philips CDM9 vs. Philips CDM9 PRO differences?

[Luckyorleans]

Is there a difference between the Philips CDM9 and the Philips CDM9 PRO CD transports? I haven't been able to find much on this.

 

[gslikker]

the following is found on the Dutch Marantz forum topic from 2008.
https://marantzforum.nl/forum/index.php?topic=1956.0
So it apparently is motor and lens differences.
Info in Dutch language states they are usually NOT interchangable, due to electrical differences.