
1Zpresso
J-Ultra Manual Coffee Grinder
A $199 espresso hand grinder with 8-micron external steps and 48 mm coated burrs; superb shots, but weak for pour-over.

The value pick for single-dosing: 64 mm flat burrs, stepless adjustment and an ion generator for about $400, at the cost of noise.
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Last reviewed October 17, 2026 by the Coffee Reviews editors · How we score
The value pick for single-dosing: 64 mm flat burrs, stepless adjustment and an ion generator for about $400, at the cost of noise.
The DF64 Gen 2.7 is Turin's US version of the popular DF64 single-dose grinder: 64 mm flat burrs (stainless or Red Titanium), stepless adjustment, a fixed-speed 250 W motor, bellows and a plasma ion generator to cut static. The Gen 2 redesign fixed the original's static and retention problems, and reviewers call it exceptional value for espresso and filter. Trade-offs are noise, a fixed motor speed and a hands-on weigh-and-grind workflow with no dose timer.
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Gear score out of 10, weighted across five factors.
The Coffee Chronicler found the Gen 2 burrs give a more modern, acidity-forward cup with good flavor separation, a noteworthy filter upgrade over Gen 1, and low retention; the fixed speed limits burr experimentation.
Metal construction and a 15 lb body feel sturdy, but it is an OEM design made in China with a 1-year warranty.
Bellows, ion generator and auto-stop make single dosing tidy, but there is no dose timer, it is noisy and you weigh every dose by hand.
At $354–$399 it offers 64 mm flat burrs and a burr-upgrade path for well under the price of the Eureka Specialità.
One of the most-discussed home grinders; Daddy Got Coffee, Aaron Meyers and The Coffee Chronicler all rate the Gen 2 a clear fix of the original's flaws.
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What people are saying
Verbatim from Reddit, forums and long-term owner write-ups — linked so you can read the full thread.
“The Gen 2 DF64 is a marked improvement over the original model. Assuming a similar price point, it offers exceptional value for money. It excels as a single doser for both espresso and drip, offering low retention and a seamless user experience.”
“Despite the advancements, the Gen 2 DF64 remains on the noisier side, especially if you equip it with SSP MP’s. For those seeking a quiet morning brew ritual, this grinder is not it.”
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FAQ
Turin says the Gen 2.7 adds a revised internal chute, ion-generator probes around the grounds path and a convex anti-popcorn blocker, and ships with a black dosing cup and silicone support wedge instead of the older silver cup and collar.
Yes. The Coffee Chronicler found the Gen 2 burrs a noteworthy improvement for filter, and says top-level pour-over benefits from SSP burr upgrades.
No. The DF64 Gen 2.7 has a fixed-speed 250 W motor; Turin's DF64V Gen 3 is the variable-speed model.
No. It is a weigh-in, grind-out single-dose grinder; Turin advises weighing beans and checking grounds with a scale, and points hopper users to its GF64.
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A $199 espresso hand grinder with 8-micron external steps and 48 mm coated burrs; superb shots, but weak for pour-over.

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Eureka
A compact, very quiet 55 mm flat-burr espresso grinder with stepless adjustment and a touchscreen timer; the chute is messy.

Fellow
A quiet, low-mess 64 mm flat-burr single-doser built only for filter coffee, with excellent grind quality for the money.