[czinck]

No, it's very obvious. There is some audiophile tendencies at the very expensive end of the espresso home setups, but there's a pretty noticeable difference between a good shot and the same shot ground ever so slightly finer. Because espresso is so strong, any off flavors are very strong and noticeable.

Maybe an analogy here is gold plated wires don't make any difference in a home setup (well, they make zero difference in a digital setup), but when you're AC/DC blowing the roof off an arena with your speakers turned up to 11 bad equipment can be pretty noticeable.