1Zpresso J-Ultra vs DF DF64 Gen 2

The 1Zpresso J-Ultra makes the smaller adjustments (2.5 µm a step against 9.7 µm), so it gives finer control between settings. Both reach the same grind sizes, just at different numbers.

Side by side

	1Zpresso J-Ultra	DF DF64 Gen 2
Setting format	Click	Number
Finer direction	Lower numbers	Lower numbers
Smallest adjustment	2.5 µm	9.7 µm
Steps from espresso to French press	264	67
Espresso setting~250 µm	1.0.2	7
Moka pot setting~350 µm	1.4.2	18
AeroPress setting~450 µm	1.8.3	28
V60 setting~560 µm	2.2.8	39
Chemex setting~700 µm	2.8.5	54
French press setting~900 µm	3.6.6	74
Kalita Wave setting~600 µm	2.4.4	43
Cold brew setting~1100 µm	4.4.7	95
Siphon setting~650 µm	2.6.4	49

This compares how the grinders adjust, not build quality, burr type or price. Settings come from one shared particle-size scale fitted from the Honest Coffee Guide and are a starting point.

Convert between them

Questions

Which grinder has finer adjustment, the 1Zpresso J-Ultra or the DF DF64 Gen 2?

The 1Zpresso J-Ultra makes the smaller adjustments (2.5 µm a step against 9.7 µm), so it gives finer control between settings. Both reach the same grind sizes, just at different numbers.

Can I use the same setting on both?

No. A V60 grind is about 2.2.8 on the 1Zpresso J-Ultra and 39 on the DF DF64 Gen 2.