1Zpresso JX Pro S vs Comandante C40 MK4
The C40 produces better grind quality and has wider competition credibility; the JX Pro S offers similar capability at less than half the price — a clear winner for budget-conscious buyers.
Spec face-off
Bars scaled to the higher value. Coloured = wins that spec.
Full specifications
Strengths & weaknesses
Full comparison
The 1Zpresso JX Pro S ($139) features 48mm conical burrs, stepless adjustment, and a 35g hopper covering the full grind range. It's regarded as one of the best-value manual grinders available and handles espresso through french press with genuine consistency. At its price, it's difficult to beat.
The Comandante C40 MK4 ($325) uses 38mm conical burrs with stepless adjustment and a 30g hopper. The C40 is widely used in specialty coffee competitions and has a strong reputation for espresso and filter quality. Its 38mm burrs are smaller than the JX Pro's 48mm, but its precision engineering and high-quality steel burrs close the gap.
The $186 price difference is hard to ignore. In side-by-side testing by multiple reviewers, the C40 produces a cleaner, more nuanced grind — especially for light roast espresso and pour-over — but the JX Pro S is closer than the price gap suggests. For most home users, the JX Pro S's output is more than adequate.
Buy the JX Pro S if budget is a real constraint or if you're new to manual grinding. Invest in the C40 if you want the precision and build quality recognized in competitive settings, brew high-end light roasts where marginal differences matter, or simply want the best standalone manual grinder under $350.