★★★★★ Great grinder with a sync option
Janez P. · October 29, 2026 · Verified purchase
When I first started looking into buying a new espresso machine with a separate grinder, I was planning to get a Eureka Mignon for a lot less money. But since I really value simplicity and ease of use, I eventually decided to go for a grind-by-weight grinder instead.
Before buying it, I attended an espresso masterclass, which was basically an "espresso basics course" :). We used a Eureka Atom grinder there, and I found it quite difficult to make small, precise adjustments to the grind size. That experience actually helped me decide to preorder the Mahlkönig E64 WS, and I don't regret it at all.
I love how easy it is to adjust the grind size, and I also like (not love) the Mahlkönig Sync system. I have the Mahlkönig Sync Scale as well, but my experience with it has been a bit mixed. You can read more about the issues I've had in my Sync Scale review.
Recently, Mahlkönig added the option to create recipes in the Sync app and send them directly to the grinder, using one of the six available recipe slots. This is a really nice feature, as you can store recipes for all your different coffee beans in the Mahlkönig Cloud and simply push the ones you're currently using to the grinder. Changing beans isn't particularly convenient, though, so I usually stick with one type until I've finished the whole bag.
There are a couple of things that could be improved. One is the adjustable spout, which lets you change the angle, probably to accommodate different portafilter sizes. For a 58 mm portafilter, I find that the maximum angle works best, but unfortunately the spout doesn't stay in that position. It tends to drop down, so I have to hold it in place manually while grinding. I've read that there's already a third revision of the grinder on the market where this issue should be fixed.
Another thing is the silicone flapper that comes with the first revision of the grinder. It makes the ground coffee very fluffy, which isn't really a problem with medium or light roasts. But with darker roasts, the volume of ground coffee can be too large for the basket, and you often end up with some mess on the counter. Apparently, the newer version comes with a metal flapper that reduces this issue. If you have an older version, you can also get a replacement metal flapper for free from the store where you bought the grinder.
If I were buying my setup again today, I'd definitely go for the E64 WS again. However, I'd probably pair it with the Mahlkönig Xenia Brew-by-Sync espresso machine instead of the Profitec Move and the separate Mahlkönig Sync Scale. It's more expensive, but I think it would make the whole espresso-making process even simpler, which was my main goal in the first place.
Before buying it, I attended an espresso masterclass, which was basically an "espresso basics course" :). We used a Eureka Atom grinder there, and I found it quite difficult to make small, precise adjustments to the grind size. That experience actually helped me decide to preorder the Mahlkönig E64 WS, and I don't regret it at all.
I love how easy it is to adjust the grind size, and I also like (not love) the Mahlkönig Sync system. I have the Mahlkönig Sync Scale as well, but my experience with it has been a bit mixed. You can read more about the issues I've had in my Sync Scale review.
Recently, Mahlkönig added the option to create recipes in the Sync app and send them directly to the grinder, using one of the six available recipe slots. This is a really nice feature, as you can store recipes for all your different coffee beans in the Mahlkönig Cloud and simply push the ones you're currently using to the grinder. Changing beans isn't particularly convenient, though, so I usually stick with one type until I've finished the whole bag.
There are a couple of things that could be improved. One is the adjustable spout, which lets you change the angle, probably to accommodate different portafilter sizes. For a 58 mm portafilter, I find that the maximum angle works best, but unfortunately the spout doesn't stay in that position. It tends to drop down, so I have to hold it in place manually while grinding. I've read that there's already a third revision of the grinder on the market where this issue should be fixed.
Another thing is the silicone flapper that comes with the first revision of the grinder. It makes the ground coffee very fluffy, which isn't really a problem with medium or light roasts. But with darker roasts, the volume of ground coffee can be too large for the basket, and you often end up with some mess on the counter. Apparently, the newer version comes with a metal flapper that reduces this issue. If you have an older version, you can also get a replacement metal flapper for free from the store where you bought the grinder.
If I were buying my setup again today, I'd definitely go for the E64 WS again. However, I'd probably pair it with the Mahlkönig Xenia Brew-by-Sync espresso machine instead of the Profitec Move and the separate Mahlkönig Sync Scale. It's more expensive, but I think it would make the whole espresso-making process even simpler, which was my main goal in the first place.
