Which to buy · Every setting
1Zpresso J-Max vs Kinu M47 Classic
Two hand grinders cross-shopped at the same money. The J-Max counts 450 clicks; the M47 Classic counts 100 clicks.
Which to buy
Choose the
J-Max if you…
- pull espresso — 1Zpresso designed the J-Max burr for it
- want clicks you can count: 90 a turn, 8.8 microns each, on an external dial
- already own one, or are buying used — 1Zpresso marks it Not Available
Choose the
M47 Classic if you…
- want stepless adjustment, in moves as fine as 5 microns
- want an all-metal body around 47 mm conical burrs
- travel with it — an EVA case comes in the box, though it weighs 1,175 g
1Zpresso's J series page marks the J-Max "Not Available" and links to the J-Ultra, which it still sells.
Sources: 1Zpresso — J series · Kinu — M47 Classic
| J-Max | M47 Classic | |
|---|---|---|
| Brand | 1Zpresso | Kinu |
| Scale | Clicks | Clicks |
| Dial range | 0 clicks – 450 clicks | 0 clicks – 100 clicks |
| Burrs | Conical | Conical |
| Espresso → filter | 138 clicks | 35 clicks |
| Filter → coarse | 242 clicks | 40 clicks |
The same number means different things
Both grinders use a clicks, which makes it tempting to copy a number straight across. Setting 50 clicks sits at grind index 0 on the J-Max but 47 on the M47 Classic — 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.
| J-Max | M47 Classic |
|---|---|
| 70 clicks | 10 clicks |
| 152 clicks | 17 clicks |
| 195 clicks | 24 clicks |
| 202 clicks | 31 clicks |
| 204 clicks | 39 clicks |
| 210 clicks | 46 clicks |
| 241 clicks | 52 clicks |
| 291 clicks | 57 clicks |
| 340 clicks | 62 clicks |
| 374 clicks | 67 clicks |
| 401 clicks | 73 clicks |
| 425 clicks | 79 clicks |
| 450 clicks | 85 clicks |
| M47 Classic | J-Max |
|---|---|
| 10 clicks | 70 clicks |
| 17 clicks | 152 clicks |
| 24 clicks | 195 clicks |
| 31 clicks | 202 clicks |
| 39 clicks | 204 clicks |
| 46 clicks | 210 clicks |
| 52 clicks | 241 clicks |
| 57 clicks | 291 clicks |
| 62 clicks | 340 clicks |
| 67 clicks | 374 clicks |
| 73 clicks | 401 clicks |
| 79 clicks | 425 clicks |
| 85 clicks | 450 clicks |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | J-Max | M47 Classic |
|---|---|---|
| Espresso | 118 clicks | 14 clicks |
| Moka pot | 193 clicks | 22 clicks |
| AeroPress (short steep) | 202 clicks | 31 clicks |
| Pour over — V60 / cone | 206 clicks | 43 clicks |
| Pour over — flat bottom | 219 clicks | 49 clicks |
| Drip / batch brew | 241 clicks | 52 clicks |
| Chemex | 289 clicks | 57 clicks |
| French press | 363 clicks | 65 clicks |
| Cold brew | 415 clicks | 77 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 J-Max
Kinu M47 Classic
Dialing in the J-Max
The J-Max trades coarse range for espresso resolution, and the click density near the fine end is the whole point of the grinder. If you are using it for pour over you are working in the middle of its range and will find it forgiving; if you are pulling shots, expect meaningful taste changes from two or three clicks. It will reach French press, but it is not what you bought it for.
Dialing in the M47 Classic
A heavy, precision-built hand grinder with stepless adjustment and genuine espresso capability. The lack of detents means repeatability depends on your own reference marks — the settings here are targets rather than clicks.
Decided?
Where to buy
These are affiliate links: if you buy through one, BrewMark earns a commission at no extra cost to you. It does not change the numbers on this page — the settings above are worked out from each grinder’s own dial curve, and were written before any of these links existed.
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