Yes, you can use a hand grinder with a prosumer espresso machine. Indeed, something like the manual 1Zpresso JX Pro is a far better budget choice than opting for an electric blade grinder. Or if you have the budget, go for the Goat Story Arco coffee grinder, a 2-in-1 coffee grinder! Just remember that the finer the grind, the more work it will be. So if you drink a lot of good espressos, you’ll need strong arms!