Microchip,
thank you for your answer. I would not think of using Cardas RCA's. In my experience, they are far from "neutral". I'd prefer WBT's. But this is another subject.
As far as changing the camac for RCA's, it seems the engineer at Mark Levinson agrees with you. He told me that I MIGHT gain a LITTLE with RCA's, but that the modification process is long and complex to do a good job.
So for now, I will follow yours and ML's suggestion and use the LEMO's. I will think about changing to RCA's if I realy like the sound of the 23.5.
Best regards,
Pierre