The catch
MiiCoffee DF54 Single Dose Coffee Grinder
The larger DF64 and DF83 platforms grind faster.
Side by side
MiiCoffee DF54 vs Fellow Opus 2 for espresso and larger brews: Opus handles larger filter loads and stops by itself
Quick verdict
The DF54 is the choice for a simple, metal-bodied espresso setup built around a scale and bellows. If a single grinder has to serve espresso and larger filter brews, choose Opus 2. Its 100 g load bin, automatic stop and two included cups cut down the handling whenever your brew size changes.
Before you buy
Why, and what it costs you
A 60 g recipe fits in one load or needs two
The Opus 2 can take a 60 g carafe dose in one go. With its bellows-equipped capacity of 50 g, the DF54 needs at least two loads.
Where this comes from
Minimum loads = ceiling(recipe grams / stated load capacity), so ceiling(60 / 100) = 1 and ceiling(60 / 50) = 2.
The catch
Fellow Opus 2 Conical Burr Grinder
You get no screen, no dose timer and no grind-by-weight control.
MiiCoffee DF54 Single Dose Coffee Grinder
- Why pick it
- Most of the time you grind a single espresso dose
- A metal body and a simple bellows routine are what you like
- The catch
- The larger DF64 and DF83 platforms grind faster.
Fellow Opus 2 Conical Burr Grinder
- Why pick it
- Larger filter batches join espresso in your brewing
- Automatic stop and two catch cups sized for the purpose appeal to you
- The catch
- You get no screen, no dose timer and no grind-by-weight control.
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What this page compares
DF54 or Opus 2? Here is how they compare on single-dose capacity, espresso cups, stepless control and the extra steps a large filter brew takes.
Which one fits
Pick the situations that sound like you
Every weekend I brew a 60 g batch of filter
The Opus 2's larger bin and catch take the complete dose.
- MiiCoffee DF54 Single Dose Coffee Grinder
- Depends
- Fellow Opus 2 Conical Burr Grinder
- Better fit
Espresso at 18 g doses is all I make
Either stated bean capacity leaves plenty of room above that recipe.
- MiiCoffee DF54 Single Dose Coffee Grinder
- Good
- Fellow Opus 2 Conical Burr Grinder
- Good
I want it to shut down on its own after grinding
The DF54 has manual power control, but Fellow specifies an automatic stop.
- MiiCoffee DF54 Single Dose Coffee Grinder
- Depends
- Fellow Opus 2 Conical Burr Grinder
- Better fit
My espresso basket is 54 mm
A compatible espresso catch comes with the Opus 2, so you may need fewer accessories.
- MiiCoffee DF54 Single Dose Coffee Grinder
- Depends
- Fellow Opus 2 Conical Burr Grinder
- Better fit
In practice
Differences you will notice
A 60 g recipe fits in one load or needs two
The Opus 2 can take a 60 g carafe dose in one go. With its bellows-equipped capacity of 50 g, the DF54 needs at least two loads.
How we worked this out
Minimum loads = ceiling(recipe grams / stated load capacity), so ceiling(60 / 100) = 1 and ceiling(60 / 50) = 2.
The bigger cup counts as much as the hopper does
That same 60 g recipe will not fit in one collection in Fellow's 30 g espresso catch. Use the separate 100 g catch instead.
How we worked this out
Two catches come with the Opus 2, rated at 30 g and 100 g. The recommendation assumes that the larger cup is the one installed.
What sets them apart is no longer espresso adjustment
Each grinder lets you change settings between marked dial positions, so workflow is the more useful way to tell them apart.
How we worked this out
On these exact generations, both MiiCoffee and Fellow specify stepless adjustment.
Option A
MiiCoffee, DF54 v1.5
DF54 Single Dose Coffee Grinder
This compact grinder has 54 mm flat burrs, stepless control and plasma static management, and it comes in at an accessible point in the premium field.
- Best for
- Buyers who focus on espresso and want low-retention single dosing without a big machine
Facts we checked
- Flat burrs of stainless steel, 54 mm
- Stepless adjustment
- Plasma ionizer
- 150-watt motor on the current v1.5 platform
Option B
Fellow, 1222MB-NA
Opus 2 Conical Burr Grinder
This compact second-generation all-rounder offers stepless control and an ionizer. Two magnetic cups come sized for filter and espresso routines.
- Best for
- Small kitchens that need a single easygoing grinder covering espresso through cold brew
Facts we checked
- Conical burrs of stainless steel, 48 mm
- Side dial for stepless adjustment
- Automatic stop and an ionizer
- A 100 g catch and a 30 g espresso catch are included, for 54 mm or 58 mm setups
Spec by spec
Where they really differ
| Spec | MiiCoffee DF54 Single Dose Coffee Grinder | Fellow Opus 2 Conical Burr Grinder | In practice |
|---|---|---|---|
| Maximum bean load | 50 g with bellows | 100 g | The DF54 chamber is too small for a 60 g carafe recipe, which fits in one Opus 2 load. |
| Adjustment | Stepless | Stepless | The stepped adjustment arrangement of the original Opus grinder is not used by either. |
| Stopping | Manual power control | Automatic stop | After the beans finish grinding, the Opus 2 spares you one action. |
| Body | Powder-coated aluminum | Mixed-material lightweight construction | Buyers who value a substantial small machine are a fit for the DF54. |
Trade-offs
What each pick costs you
With MiiCoffee DF54 Single Dose Coffee Grinder
- Compared with established 64 mm grinders, the 54 mm format has fewer aftermarket burrs to choose from.
With Fellow Opus 2 Conical Burr Grinder
- Its light body feels less solid than the metal grinders higher up the range.
Decision guide
How to decide
In a household that makes both espresso and carafe coffee, the first question is answered by your largest usual dose.
This is Opus 2 and differs from the original Opus
Fellow's second-generation grinder has a stepless side dial and 48 mm conical burrs. Advice about the original model's inner adjustment ring does not apply to this machine. That matters because both products here now offer continuous grind adjustment, which shifts the sensible decision toward capacity, cup handling and how you finish a dose.
More than grinding time goes into a larger brew
Splitting beans into two loads means measuring the total dose, tracking both portions and combining the grounds before brewing. The DF54 can manage it, but a 60 g weekend carafe is simpler with the Opus 2's 100 g loading bin and standard cup. If an 18 g espresso is your largest recipe, that extra capacity does very little for you.
Espresso accessories change what the whole setup looks like
Fellow's espresso catch holds 30 g and works with 54 mm or 58 mm portafilters. The cup supplied with the DF54 is 58 mm. Portafilter diameter still matters with either, and neither replaces a scale. Pick the package that fits your machine, so a simple morning coffee does not turn into a pile of transfer adapters.
What this page can’t tell you
- Capacity shows how many loads a recipe requires. It says nothing about grinding speed, taste or measured retention.
By the numbers
What the data shows
What we found across the premium coffee grinders we compare, plus the checked facts behind each finding.
How many fit
Only 12 of the 39 models checked meet every need here: “Espresso and filter from one grinder”, “A routine of measured single doses”, and “Changing coffees frequently”.
12 models fit, out of 39 checkedThe gap in numbers
MiiCoffee DF54 Single Dose Coffee Grinder lists 54 mm for listed burr diameter, 13% more than the 48 mm on Fellow Opus 2 Conical Burr Grinder.
- MiiCoffee DF54 Single Dose Coffee Grinder
- 54 mm
- Fellow Opus 2 Conical Burr Grinder
- 48 mm
- Models with this figure
- 28 of 39
Show the facts and the math
How we countedThe count uses each product's current fit ratings for “Espresso and filter from one grinder”, “A routine of measured single doses”, and “Changing coffees frequently”. A need with no documented match is not counted.
How we calculatedA grinder counts here only if it publishes its burr diameter as a number. Diameter matters no more than burr geometry and alignment do. For context, 28 of 39 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| MiiCoffee DF54 Single Dose Coffee Grinder |
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| Fellow Opus 2 Conical Burr Grinder |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
MiiCoffee DF54 Single Dose Coffee Grinder
Most of the time you grind a single espresso dose
See price & reviews on AmazonFellow Opus 2 Conical Burr Grinder
Larger filter batches join espresso in your brewing
See price & reviews on AmazonEach link opens in a new tab.
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