Which to buy · Every setting
Fellow Opus vs Wilfa Svart Aroma
Two grinders cross-shopped at the same money. The Opus is numbered 1–11; the Svart Aroma is numbered 1–18.
Which to buy
Choose the
Opus if you…
- want espresso as well — Fellow rates it from espresso to cold brew
- want an inner ring for micro-adjustment between the 41 dial settings
- want 40 mm conical burrs
Choose the
Svart Aroma if you…
- brew press pot, filter, AeroPress or moka pot — among the five settings Wilfa lists
- want a 250 g bean container and a timer that stops itself
- want a five-year warranty
Shop links are affiliate links: BrewMark earns a commission if you buy through one, at no extra cost to you. The verdicts were written without regard to it.
Fellow now sells the Opus 2 in place of the original; the settings on this page are for the original.
Sources: Fellow — Opus (archived) · Wilfa — Svart Aroma
| Opus | Svart Aroma | |
|---|---|---|
| Brand | Fellow | Wilfa |
| Scale | Numbered dial | Numbered dial |
| Dial range | 1 – 11 | 1 – 18 |
| Burrs | Conical | Conical |
| Espresso → filter | 5.7 numbers | 5 numbers |
| Filter → coarse | 3.9 numbers | 12 numbers |
The same number means different things
Both grinders use a numbered dial, which makes it tempting to copy a number straight across. Setting 6 sits at grind index 34.2 on the Opus but 40 on the Svart Aroma — 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.
| Opus | Svart Aroma |
|---|---|
| 1.2 | 1 |
| 2 | 4.7 |
| 3.2 | 5.2 |
| 5.3 | 5.4 |
| 7.1 | 6.2 |
| 8 | 7.9 |
| 8.2 | 10.1 |
| 8.3 | 12.3 |
| 9.1 | 13.9 |
| 9.3 | 15.4 |
| 10.2 | 16.7 |
| 11 | 18 |
| Svart Aroma | Opus |
|---|---|
| 1 | 1.2 |
| 3.2 | 1.2 |
| 4.7 | 2 |
| 5.2 | 3.2 |
| 5.4 | 5.3 |
| 6.2 | 7.1 |
| 7.9 | 8 |
| 10.1 | 8.2 |
| 12.3 | 8.3 |
| 13.9 | 9.1 |
| 15.4 | 9.3 |
| 16.7 | 10.2 |
| 18 | 11 |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | Opus | Svart Aroma |
|---|---|---|
| Espresso | 1.2 | 2.3 |
| Moka pot | 1.3 | 4.5 |
| AeroPress (short steep) | 3.2 | 5.2 |
| Pour over — V60 / cone | 6.3 | 5.8 |
| Siphon | 7.2 | 6.3 |
| Pour over — flat bottom | 7.3 | 6.8 |
| Steep and release — Clever / Switch | 8 | 7.5 |
| Drip / batch brew | 8 | 7.9 |
| Cupping | 8 | 8.4 |
| Chemex | 8.2 | 10 |
| French press | 9 | 13.4 |
| Cold brew | 10 | 16.1 |
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.
Fellow Opus
Wilfa Svart Aroma
Dialing in the Opus
Marketed as all-purpose, and it genuinely does cover more range than the Ode, but the espresso end is workable rather than good — expect to chase it. Where it earns its place is the coarse end: cold brew and French press come out notably even. If you bought the Opus mainly for espresso, dial it as a brew grinder first and judge it there.
Dialing in the Svart Aroma
Designed with brew in mind and calibrated around filter, with a range that does not seriously attempt espresso. Within its intended territory it is consistent and easy to hit.