Link wrote:hansing80, looks like you got figured out. Do you notice any taste difference from your 9 bar brew pressure ?

I've just pulled a couple of shots at 9bar and I think the taste difference is not that huge.
It is milder than at 10bar, but the aroma is weak. I will go with a light roasted bean in a few days.
I think both 9bar and 10bar is good. It's just up to your taste.

Well, here's hoping that what I have typed in both of these threads is consistent. In the coming months, someone will possibly disassemble that section of the machine and we will all learn exactly what is there.

The response that was received from Rocket is missing a few sentences.