Which to buy · Every setting
1Zpresso JX-Pro vs 1Zpresso K-Max
Two 1Zpresso models whose numbers do not mean the same thing. The JX-Pro counts 200 clicks; the K-Max counts 180 clicks.
Which to buy
Choose the
JX-Pro if you…
- want smaller clicks: 12.5 microns each, 40 a turn
- pull espresso as well as pour over — 1Zpresso rates it for both
Choose the
K-Max if you…
- grind larger doses — 35–40 g
- want an external ring: 90 clicks a turn, 22 microns each
- want a magnetic catch cup
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1Zpresso's K series page marks the K-Max discontinued and points buyers to the K-Ultra. 1Zpresso's JX-Pro page now shows the JX-Pro S as out of stock and unavailable, while its J series page still lists the JX-Pro.
Sources: 1Zpresso — J series · 1Zpresso — K series · 1Zpresso — K series manual · 1Zpresso — K-Max (archived)
| JX-Pro | K-Max | |
|---|---|---|
| Brand | 1Zpresso | 1Zpresso |
| Scale | Clicks | Clicks |
| Dial range | 0 clicks – 200 clicks | 0 clicks – 180 clicks |
| Burrs | Conical | Conical |
| Espresso → filter | 108.4 clicks | 52 clicks |
| Filter → coarse | 51.8 clicks | 90.9 clicks |
The same number means different things
Both grinders use a clicks, which makes it tempting to copy a number straight across. Setting 90 clicks sits at grind index 13.1 on the JX-Pro but 64.2 on the K-Max — far enough apart to change the cup.
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| JX-Pro | K-Max |
|---|---|
| 40 clicks | 31 clicks |
| 73 clicks | 44 clicks |
| 101 clicks | 57 clicks |
| 121 clicks | 68 clicks |
| 137 clicks | 78 clicks |
| 151 clicks | 84 clicks |
| 163 clicks | 86 clicks |
| 173 clicks | 88 clicks |
| 181 clicks | 92 clicks |
| 188 clicks | 102 clicks |
| 192 clicks | 123 clicks |
| 196 clicks | 149 clicks |
| 200 clicks | 174 clicks |
| K-Max | JX-Pro |
|---|---|
| 31 clicks | 40 clicks |
| 44 clicks | 73 clicks |
| 57 clicks | 101 clicks |
| 68 clicks | 121 clicks |
| 78 clicks | 137 clicks |
| 84 clicks | 151 clicks |
| 86 clicks | 163 clicks |
| 88 clicks | 173 clicks |
| 92 clicks | 181 clicks |
| 102 clicks | 188 clicks |
| 123 clicks | 192 clicks |
| 149 clicks | 196 clicks |
| 174 clicks | 200 clicks |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | JX-Pro | K-Max |
|---|---|---|
| Espresso | 59 clicks | 39 clicks |
| Moka pot | 96 clicks | 54 clicks |
| AeroPress (short steep) | 120 clicks | 68 clicks |
| Pour over — V60 / cone | 145 clicks | 82 clicks |
| Siphon | 151 clicks | 84 clicks |
| Pour over — flat bottom | 156 clicks | 85 clicks |
| Steep and release — Clever / Switch | 160 clicks | 86 clicks |
| Drip / batch brew | 120 clicks | 70 clicks |
| Cupping | 165 clicks | 86 clicks |
| Chemex | 172 clicks | 88 clicks |
| French press | 186 clicks | 97 clicks |
| Cold brew | 194 clicks | 138 clicks |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
1Zpresso JX-Pro
1Zpresso K-Max
Dialing in the JX-Pro
External adjustment makes this the easiest hand grinder to actually dial, because you can count clicks without disassembling anything. Its filter range is generous, which is a mixed blessing — small click changes do less than you expect at the coarse end and more than you expect near espresso. Move in larger jumps for French press, single clicks for anything under filter.
Dialing in the K-Max
A larger burr set than the J series and correspondingly faster, aimed squarely at espresso with enough range to reach filter. Its click resolution near the fine end is the reason to own it.