Niche Duo
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The Duo pairs its grinding unit with two interchangeable sets of 83 mm flat burrs, one for espresso and one for filter methods, covering both without recalibrating the same set each time. The body is aluminium with real oak trim; the filter set can be bought together with the grinder or added later, and swapping burr sets takes less than a minute.
Grind adjustment runs on a continuous, click-free knob, with no numbered steps: you choose the setting and pour beans into the funnel right before grinding, since there's no hopper holding them between sessions. In the box are a 58 mm grind cup for dosing straight into the portafilter, a socket driver and a cleaning brush. The design is straight-through: nearly everything that goes into the burrs comes back out, with no residue left behind.
It suits someone who wants to move between espresso and filter without switching grinders, not someone after a hopper they fill once and leave topped up for days.
CoffeeSpecs Awards
Most capable Semi-professional · All-purpose grinders
Highest technical score among the 5 sheets in the All-purpose grinders category (semi-professional tier): 60/100.
How we assign awards →Technical specifications
| Parameter | Value | Source |
|---|---|---|
| Machine dimensions | 13.5 × 23 × 35.5 cm (5.3 × 9.1 × 14.0 in) | manufacturer website |
| Weight | 5.0 kg (11.0 lb) | manufacturer website |
| Burr type | Flat | Declared by the brand |
| Burr diameter | 83 mm | Declared by the brand |
| Retention | 0 g | Declared by the brand |
| Single dose | Yes | Declared by the brand |
| Supported brew methods | Espresso, Drip filter | Declared by the brand |
| Adjustment type | Stepless | Declared by the brand |
| Drive | Electric | Declared by the brand |
Pros and cons
In favour
- Two dedicated 83 mm flat burr sets, one for espresso and one for filter, swappable in under a minute
- Continuous click-free dial for fine control over particle size
- Included 58 mm grind cup for dosing into the portafilter, socket driver and cleaning brush source
- Straight-through design meant to leave no ground coffee behind between grinds
Worth knowing
- No hopper to fill in advance: beans are poured right before each grind
- The filter burr set is bought separately if not taken together with the grinder source
Similar machines to consider
Other products Niche
Recipes this grind covers
All recipes →Chosen from the brew methods the manufacturer declares it covers, not from the category.
Espresso
Seven grams, twenty-five seconds, twenty-five millilitres: Italian espresso has a written specification, and this is it.
- Dose
- 7 g
Ristretto
The same dose as an espresso, less water in the cup. No institutional source fixes its volume — so here you will only find what is documented.
- Dose
- 7 g
Cappuccino
25 ml of espresso and 100 ml of steamed milk, in a 150–160 ml cup. The cappuccino has a specification too.
- Dose
- 7 g
Caffè macchiato
An espresso and a stain of milk. How much milk, exactly? No source declares it — and we do not invent it.
- Dose
- 7 g
Caffè americano
An espresso lengthened with hot water. The amount of water is set by no standard: it changes from country to country and from bar to bar.
- Dose
- 7 g
Caffè shakerato
Double espresso, sugar syrup and ice in a shaker. It has no specification: it has a house recipe.
Le alternative a catalogo
Scelte dalla fascia d'uso e dall'ingombro dichiarati, non dal prezzo: i prezzi non li pubblichiamo.
Simpler, entry level
More compact
Same tier, different manufacturer



