This is exactly what is of value, a "direct" comparison between the Pro-Ject RS2 and the Aqua Hifi La Diva M2 in the same audio system. And granted even then it’s one listener’s opinion but that’s okay. We know by its very nature it can only be subjective. This However is still more meaningful than comments and strong opinions from those who’ve heard neither or certainty did not hear them directly.
In your assessment you used the term slightly several times when describing the difference between the two CD transports. This narrow gap does not surprise me. I believe the Stream Unlimited CD Pro-8 drive and Blue Tiger servo control card shared by both transports is the dominant factor responsible for the superb sound quality of both.
I can see the Aqua La Diva M2 being "slightly " (As you put it) better due to additional fine tuning. What is quite telling is your RS2T was compared utilizing the stock SMPS wall wart. And yet results were very close. What happens when you instead use a linear power supply (LPS) which the Aqua utilizes internally?
Both exceeded your CEC CD transport (Other listeners on this forum have reported the same). It seems very apparent to me that this latest Stream Unlimited CD technology has undoubtedly elevated the performance bar. @theburbster1 , same as you I’m highly impressed with the sonic performance of the RS2T. It has surpassed my high expectations. All of this with the tiny (Humble) wall wart supply.
My Fidelizer Nikola 2 LPS will be shipped to me soon, I’m very curious to discover where things go from there. Thanks again for taking the time to post your insightful listening experiences with two wonderful CD transports.
Charles