A GU64 Gen2 Owner on Reddit: What They Liked, What Bugged Them, and What Changed in the Cup
The useful owner posts are rarely the ones that say everything is perfect. This one did not. A new GU64 Gen2 owner liked the coffee, the noise level and the value, but also called out finish issues, no included bellows or knocker, and some extra grounds after tapping the grinder.
Read the original Reddit discussion
Why they bought it: the price made the GU64 hard to ignore
The owner was already looking around the DF54 / DF64 part of the market. They said the GU64 Gen2 ended up more than £100 cheaper than a DF64 and roughly around DF54 money after discounts in the UK.
That context matters. This was not someone trying to find the most expensive grinder they could justify. They were trying to get a meaningful step up from the Fellow Opus without spending just for the sake of spending.
Looking at the GU64 for the same reason?
Check the current configuration, burr choices and specifications before comparing price alone.
The biggest surprise was the cup
The owner did not describe the Fellow Opus as a bad grinder. That is what makes the comparison more useful. They were already making coffee they liked.
What surprised them was how noticeable the change was after moving to the GU64 Gen2. Their first impression was not "the workflow feels more premium." It was that the coffee tasted more different than they expected.
That is one person's palate, one coffee setup and an early impression. It is not a controlled taste test. But it is also the exact question most people ask before upgrading: will I actually notice it?
What they liked
Quiet operation, strong early cup results, useful value against the alternatives they were considering, and MP burrs that handled both espresso and occasional pour-over better than expected.
What they did not love
Visible finish imperfections, no included bellows or knocker, some extra coffee after tapping, and uncertainty about aftermarket SSP burr compatibility.
The MP burrs were more useful for pour-over than they expected
The owner chose the multi-purpose burrs with espresso as the main use case. Pour-over was only around 20-30% of their coffee, so they were not looking for a dedicated filter grinder.
Even so, they were happy enough with the MP burrs for pour-over that they did not feel an immediate need to buy the filter-focused burr set.
Their own summary was basically: the pour-over was very good, not quite the brightest cafe cup they had tasted, but close enough that the MP setup made sense for how they actually drink coffee.
Espresso most days, pour-over sometimes?
Our MP vs F burr guide maps both burr sets across the dial and explains where each one makes the most sense.
The 150 W motor worried them more on paper than in use
Before buying, the owner was concerned that 150 W might be too little for lighter roasts. So far, they said they had not experienced the motor struggling, while also making an important caveat: they do not regularly drink extremely light or unusually dense coffees.
That is the useful way to read this. It is not proof that one motor number predicts performance across every bean. It is simply an early owner saying the thing they worried about on the spec sheet had not become a real problem in their routine.
Now the part that makes the post useful: what bugged them
The owner was not shy about the negatives.
- They noticed visible imperfections around the body and some seam / gap variation.
- They did not like that the Gen2 did not include a knocker or bellows.
- A light tap after grinding could release roughly 0.2 g more coffee in their setup.
- At the time of the post, they were still waiting for confirmation about SSP burr compatibility.
We are leaving those points in because removing them would turn a useful owner post into an ad.
What changed in Gen2 around grounds flow?
The owner knew about the clogging complaints around the original GU64 and specifically mentioned the updated auger, ionizer and wider exit path as reasons they hoped Gen2 would behave better over time.
The current GU64 Gen2 product page describes an enlarged exit chute, relocated plasma discharge needles and a redesigned auger. Those are real Gen2 changes. What an early Reddit post cannot tell us is how the grinder will behave after six months of daily use.
Who does this owner feedback make the GU64 Gen2 interesting for?
The owner came from a Fellow Opus Gen 1 and noticed a larger cup change than expected.
Their MP burr setup covered both well enough that a second filter-focused burr set did not feel urgent.
Value was a major reason they chose the GU64 Gen2 in the first place.
Read the owner's cosmetic complaints carefully. Their unit had visible imperfections they felt took away from the premium feel.
Do not assume compatibility from the 64 mm size alone. Confirm the current burr carrier compatibility before buying.
Not sure GU64 Gen2 is the right Geimori grinder?
Compare GU38, GU63 and GU64 Gen2 by brew method, burr platform, workflow and the kind of cup you actually want.
What we would watch over the next few months
This is still an early-owner post. The questions that matter next are less exciting, but more useful:
- Does retention stay consistent after months of use?
- Does the exit path stay clear with different roast levels?
- How does it behave with genuinely very light, dense beans?
- Does the owner still feel the cup difference after the new-grinder excitement wears off?
- Does their view of the MP burrs change after more pour-over use?
If the original owner updates the Reddit thread, that follow-up will be more useful than pretending a first-day impression is a long-term review.
Open the original r/espresso post
Considering the GU64 Gen2?
Do not buy it because one Reddit user liked it. Look at your brew methods, the burr setup, workflow, retention expectations and what you actually want to change from your current grinder.
