1zpresso manual grinder

1Zpresso Jx: This is My New Favorite Hand Grinder

The new model from 1Zpresso is a beast that chews up coffee beans and spits out uniform particles in a matter of seconds.
Asser Christensen
Asser Christensen
Licensed Q Arabica Grader, M.A. Journalism

Manual grinders have always been kind of slow compared to their electrical counterparts.

But that’s not the case with the new model from 1Zpresso. I’m not exaggerating when I say that this grinder is faster than some electrical grinders (cough, cough Baratza Encore and Wilfa Uniform).

The Jx model has massive 48 mm burrs that are designed to be extra aggressive. The result is a beast of a manual grinder.

With the very attractive price in mind, this grinder will be the perfect fit for most people looking for a daily workhorse. I have had it for a couple of months, so I have a pretty clear picture of the pros and cons by now.

However, there are probably some people who should stay clear of this model. Read on to find out whether it’s for you.

1Zpresso Jx
6 Reviews
1Zpresso Jx
It's ultra-consistent, a pleasure to use, and competively price. If you're looking for a daily workhorse for manual brewing this is my top recommendation

About 1Zpresso

1ZPresso is a relatively new Taiwanese coffee brand that mainly makes manual coffee grinders.

I have known them for a couple of years and followed their work with curiosity. I have previously tested their travel model ‘Mini Q’ and the allrounder ‘E’, which is suitable for both espresso and pour over.

While both models are excellent grinders they each have their own shortcomings. They are good but if I had to rely on one of them everyday I’d probably start to miss some of the features of the high-end models.

Both Q and E have relatively small capacity and both have 38mm burrs. In practice it means that the workflow when brewing larger batches is slightly annoying. You’ll have to grind, then refill the hopper, and grind again. Also, the grinding itself takes a bit longer than I’d prefer.

For a while I have been hoping to see grown-up grinder with 48 mm burrs from 1Zpresso and now it’s finally here.


The Mini Q might be a better option for people with small hands or frequent travellers

1Zpresso Jx looks the part. The main color is a matte-black except the wooden knob on the handle. It looks classy and expensive and in the hand it feels sturdy and well-built.

Please note that the company has recently released the grinder in a silver grey model with an aluminum grounds bin as opposed to the glass receiver on the test unit I have. If you’re worried about dropping the glass receiver on the floor that’s probably the model you should go for.

There is a broad rubber band covering much of the body, which gives an excellent grip. This is important as the grinder is quite wide. It’s about the same diameter as the Comandante. However, because the Jx’s burrs are much more aggressive it requires more strength to turn the crank. Personally, I don’t find it difficult at all but I’m 6.2 and in pretty good shape.

If you have small hands or little grip strength, I’d probably look for a slimmer grinder that requires less torque such as the Mini Q.

On the inside there are two bearings ensuring ultra smooth spinning action. As always with grinders from 1Z the bearings are some of the best in the industry.

Overall, however, the built, the tactile sensations, and the ergonomics are amazing. It just feels good in the hand, looks sexy, and grinds smoothly. It’s a pleasure to use.

Easy adjustment

1Zpresso has been using a magnetic wooden ball on the hand crank on most of their models, but this time around they have changed the design so it’s bigger and more comfortable in the hand, while also less likely to pop off during grinding.

The attention to details also carries over to the adjustment system which is really easy to change.

It’s your basic system with small click for each increment. However, there are plenty of numbers and markings so it’s very easy to find your previous adjustments. The adjustment is easier on the company’s ‘E Pro’ model but overall it’s still very easy to use. For instance, it’s way more simple than adjusting the Lido 3 and the Helor 101.

1zpresso Jx adjustment
Going back and forth between settings is relatively easy

The grounds bin is made of an almost black glass material. It looks great and reduces static electricity, however, I’m not sure how it would handle getting dropped on the floor.

Overall, however, the built, the tactile sensations, and the ergonomics are amazing. It just feels good in the hand, looks sexy, and grinds smoothly. It’s a pleasure to use.

As far as portability is concerned, it’s not the smallest grinder out there weighing in at 650 grams. Sizewise it’s comparable to Helor 101 and Comandante C40 so it’s still possible to bring on a trip.

However, if you’re looking for a dedicated travel grinder you should probably consider the Mini Q instead.

Grind speed

The main thing that strikes me about this grinder is the insane speed with which it goes through the beans. The Jx is almost a true 1 second per gram grinder. It takes me about 25 seconds to grind my typical pour over dose of 20 grams of coffee.

What’s even more remarkable, is that grinding for espresso doesn’t take much longer. It’s by far the fastest manual espresso grinder I have tried.

I will say that it takes a lot of grip strength and stamina to be able to grind espresso this fast but it’s possible to do 18 grams for espresso 25 seconds. That’s insane! In fact, it’s faster than some electric grinders.

I realize that the difference between 25 and 55 secs probably doesn’t sound like a lot, when you’re reading a review. But in daily use it’s just massive. Just ask anybody who had one of those small Porlex grinders how quickly it gets old to be working for minutes everytime you want a cup.

After consistency, speed is the one thing I care most about when reviewing manual coffee grinders, and the Jx is the fastest one I have ever encountered.

Espresso vs pour over

In the official info from 1Z they mention that this grinder is designed specifically for espresso while it can also be used for pour over. I have been using it for all kinds of manual brewing with great results, and I actually think it’s better suited for this purpose.

Since, the grinder has incremental steps you will not be able to fine tune your espresso shots with 100% accuracy. I have made shots with it, and they do taste good, however, I think the grinder really shines when it comes to manual brewing.


1zpresso grind size
Here’s a relatively coarse grind for pour over or French press. The consistency and lack of fines is striking.

The consistency of the Jx is simply astounding. I have been experiencing some extremely clean pour overs, since getting the grinder a few months ago.

It only produces a tiny amount of fines. It’s the kind of grinder where you’ll see the drawdown time decrease a lot because of the uniform particle size.

It’s very convenient to switch between different settings in the manual brew range. I have a setting for Hario V60, Kalita Wave and Aeropress each, and I can go back and adjust the grinder in a matter of seconds.

In terms of consistency, this grinder is up there with all the famous models such as Helor 101 and Comandante C40. I haven’t done any particle analysis tests with the software but my tastebuds and drawdown times when doing pour over confirms this.

The flavor separation is clear, the aftertaste is long, and it’s easy to avoid bitterness even when going for high extractions.


In my opinion this grinder is one of the best deals (if not the best) you can make when it comes to specialty coffee at the moment.

The Jx grinds faster than most if not all of its rivals. The design is not only attractive but also highly functional.

The grounds are very uniform and it can be used for espresso and pour over.

In my opinion this manual grinder is one of the best deals (if not the best) you can make when it comes to specialty coffee at the moment.

There are  only a couple of cons I can think of.

  • It might not be the most suitable option for people with small hands and/or low grip strength
  • It’s not stepless, which means that the options are a bit limited in the espresso range

Jx is 2-3 times cheaper compared to many of the rivals, while beating them in many areas. At the current price it’s just a no-brainer.

Frankly, I think it’s almost too cheap. Even if it cost the same as 1Zpresso’s flagship model ‘E Pro’ I’d take the Jx due to its bigger burrs.

I’ll update my current grinder recommendation and tell people who ask me to go for the Jx as long as the market looks like it does today. It’s just that good.

If you want to get a ‘grown up’ grinder and don’t mind a bit of exercise in the morning this is an ideal choice. This grinder could be your daily workhorse for years without any hiccups.

>>>See More Reviews of 1zPresso Jx on Amazon<<<

Update: Some readers have reported back after purchasing the Jx. When it beats the Virtuoso right away, you know it’s a pretty amazing grinder.

about the author

about the author

Hey, I’m Asser Christensen from Denmark – the founder & editor of this site.

I have been crazy about caffeine for almost as long as I can remember. Today, I’m a licensed Q Arabica Grader and full time coffee writer.

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