The Niche Zero Grinder uses conical burrs, which are the same as those found in a Mazzer Koney. The reviewer, James Hoffmann, states that his preference is for flat burr grinders over conical burrs.
The reviewer finds the Niche Zero's calibration system to be a significant improvement over grinders that simply use a random number scale (0-9). While not perfect, it provides a more precise and repeatable starting point for grind adjustments. The grinder allows for fine tuning via a bottom ring adjustment to ensure calibration across different units.
This video is a review of the Niche Zero Grinder, a coffee grinder initially discovered on Indiegogo. The reviewer, James Hoffmann, initially dismissed it due to its origins but later received a unit for review. The review covers the grinder's design, workflow, performance, and drawbacks.