Manley 300B preamp with 300B SE/PP amp

Is there anyone who have tested this combination? Can't find much about the combination.
The 300b amp with the right speakers is a more magical combination, and of course there is synergy with the preamp.

You do lose a bit of slam compared to the Snappers, but you gain in terms of sound stage and mid-range naturalness.

Dealer disclaimer
Thanks Audiooracle: you give me description I am seeking.

Are there anyone else with experience of these two units together?
I'm also interested in the possibility of using the Manley 300B preamp together with the Manley Neo-Classic SE/PP 300B monoblocks. Anyone have experience when these components? Thanks.