Contents
  1. Specifications
  2. What changed from the original Opus
  3. What the original Opus review tells us, and what it does not
  4. Strengths and limitations
  5. Will it fit?
  6. Complete setup
  7. Alternatives
  8. Our recommendation

Quick verdict

On paper, the Opus 2 is one of the most counter-friendly all-purpose grinders here. Fellow lists a 206 × 130 mm body, a 267 mm height, 48 mm conical burrs, a stepless dial, auto-stop and a 30 g espresso catch cup. The catch is evidence. The hands-on criticism we found, that it held 1–3 g per espresso dose, was about the original 40 mm Opus. Opus 2 changes the burrs and dial, so that result may not carry over, and we have not found a detailed independent test of the new model.

Buy it if

  • You want one short grinder for espresso and filter, loaded a dose at a time.
  • You value a 2-year warranty and published dimensions.
  • Your cabinets are low. Its stated 267 mm height is far below the hopper grinders reviewed here.

Skip it if

  • You need proven low retention before you buy.
  • You want flat burrs for filter-only brewing; see the Ode Gen 2.
Countertop Coffee editorial score7.5/10
Best for
Small counters that need one grinder for espresso and filter, loaded a dose at a time.
Main compromise
Opus 2 is new; the hands-on retention criticism we found applies to the original 40 mm Opus, not this model.
Burrs
48 mm stainless steel conical
Adjustment
Stepless side dial with 48 marked positions
Loading
100 g single-dose load bin

Specifications

Fellow Opus 2 specifications and where each figure comes from
SpecDetail and source
Burrs48 mm stainless steel conicalManufacturer: Fellow
AdjustmentStepless side dial with 48 marked positionsManufacturer: Fellow
Loading100 g single-dose load binManufacturer: Fellow
DosingAuto-stop; 100 g standard cup and 30 g espresso cup for 54/58 mm portafiltersManufacturer: Fellow
Static and retentionIntegrated ionizer; Fellow claims "near-zero" retention (manufacturer claim)Manufacturer: Fellow
Dimensions206 × 130 × 267 mm (8.1 × 5.1 × 10.5 in)Manufacturer: Fellow
Weight2.3 kg (5.1 lb)Manufacturer: Fellow
Power300 WManufacturer: Fellow
Warranty2 years, extendableManufacturer: Fellow

What changed from the original Opus

Fellow lists these upgrades over the first Opus (Fellow): larger 48 mm burrs (the original used 40 mm), a simpler stepless side dial with 48 marked positions, an upgraded ionizer, and two dedicated catch cups (a 100 g standard cup and a 30 g espresso cup). Fellow also claims an espresso dose grinds in about 9 seconds. That is a manufacturer figure.

What the original Opus review tells us, and what it does not

CoffeeGeek's first look at the original Opus (April 2024) found espresso achievable at the finest settings, but with a narrow adjustment window. It measured 1–3 g retained per espresso dose, saw the ionizer work well against static, and recorded 74 dB under load (CoffeeGeek).

The Opus 2 has different burrs and a different dial, so none of those numbers can be assumed for it. Fellow now claims "near-zero grind retention" via an internal impeller. We list that as a claim until a measured test is published.

Strengths and limitations

What stands out

  • Low and compact. A stated 267 mm height and 130 × 206 mm footprint.
  • Built for single dosing. 100 g load bin, auto-stop, and an espresso cup for 54 and 58 mm portafilters.
  • 2-year warranty, extendable (Fellow).

Limitations

  • Thin independent evidence for this version.
  • Retention claim unverified. The original model held 1–3 g in CoffeeGeek's test.
  • Conical burrs for coarse brews. CoffeeGeek noted excess fines at press-pot settings on the original Opus.

Will it fit?

Opus 2 beside the Encore ESP and Ode Gen 21. Fellow Opus 2: 130 mm wide by 206 mm deep; 2. Baratza Encore ESP: 121 mm wide by 160 mm deep; 3. Fellow Ode Gen 2: 105 mm wide by 239 mm deepWall610 mm (24 in) counter depth123
  1. 1 Fellow Opus 2: 130 × 206 mm (5.1 × 8.1 in), manufacturer (source does not say which figure is width; narrower side drawn as width)
  2. 2 Baratza Encore ESP: 121 × 160 mm (4.8 × 6.3 in), retailer listing
  3. 3 Fellow Ode Gen 2: 105 × 239 mm (4.1 × 9.4 in), manufacturer (source does not say which figure is width; narrower side drawn as width)
Opus 2 beside the Encore ESP and Ode Gen 2. Top view, drawn to one scale from each product’s stated width and depth; the shaded band is a 610 mm (24 in) counter depth, the NKBA planning standard. Leave extra room for cables, lids, portafilter handles and hands. This is a planning aid, not a measurement.

Complete setup

Alternatives

We compare it head to head in Encore ESP vs Opus 2.

Our recommendation

I'd shortlist the Opus 2 for small, low-cabinet kitchens that need one grinder for everything. I'd hold off on calling it low-retention until a measured test of the Opus 2 itself is published.

Check price on Amazon

Amazon listing: 1222MB-NA, black

Sources

  1. Opus 2 Conical Burr Grinder — Fellow. Manufacturer. Accessed September 26, 2026.
  2. Fellow Opus Conical Burr Grinder first look (original 40 mm model) — CoffeeGeek. Independent review. Mark Prince, 2024-04-10. Accessed September 26, 2026.
  3. Baratza Encore ESP Coffee and Espresso Grinder — Seattle Coffee Gear. Retailer listing. Accessed September 26, 2026.
  4. Ode Brew Grinder Gen 2 — Fellow. Manufacturer. Accessed September 26, 2026.