Every machine on this site is assessed the same way, from the same kinds of sources, against the same criteria. This page explains exactly what that means, so you can judge how much weight to give what we publish.
We research, we do not lab-test
NineBarLab does not operate a test kitchen. We have not personally pulled shots on the machines we cover, and nothing on this site should be read as a first-hand measurement. If you see a brew temperature or a shot time here, it came from a manufacturer specification or a published third-party measurement, and it is labelled as such.
We are explicit about this because the alternative is common and dishonest. A great many affiliate sites describe protocols they never ran. We would rather be a research desk that is good at reading evidence than a fake laboratory.
Where our information comes from
- Manufacturer documentation. Spec sheets, user manuals and service manuals. Manuals are the most useful of the three: they reveal boiler type, wattage, cleaning requirements and serviceable parts that marketing pages leave out.
- Owner reviews at volume. We read across retailers rather than relying on one star rating, and we weight recent reviews more heavily, because manufacturing quality drifts between production runs.
- Long-term failure reports. Espresso enthusiast forums and repair channels are where you find out which pump fails, which gasket perishes and which brand actually stocks spare parts.
- Independent measurements. Where a reputable reviewer has published instrumented data, we cite it and credit them rather than passing it off as ours.
- Price history. Tracked over time, so a “deal” is judged against what the machine normally sells for.
What we assess
Five criteria, applied consistently:
- Shot potential. Can the hardware produce good espresso in capable hands? Pressure control, temperature stability, portafilter size and basket quality.
- Steam capability. Boiler type and wattage, wand design, and above all recovery time between steaming and the next shot.
- Build and serviceability. Materials, and whether the thing can be repaired or is disposable when a part fails.
- Ease of use. How much technique the machine demands before it rewards you, and how much daily maintenance it needs.
- Value. What the machine costs against what comparable hardware costs, including the grinder you will need alongside it.
The limits of this method
Research is good at some questions and useless at others. It can establish that a machine has a single boiler with a thermoblock, that its steam recovery is slow by design, and that a particular pump has a known failure pattern. It cannot tell you how the steam wand feels to position, whether the drip tray is annoying to empty, or how the machine sounds in a quiet kitchen.
Where a question can only be answered by holding the machine, we say the question is open instead of guessing. If that makes a page shorter than a competitor’s, so be it.
Independence
We do not accept payment for coverage, placements or rankings. No manufacturer reviews a page before it publishes. We earn money through affiliate links, explained in full in our affiliate disclosure, and a commission has never moved a recommendation.
When we update
Pages are re-checked when a machine gets a hardware revision, when its price moves more than 15 percent, or every 12 months, whichever comes first. The date at the top of every page is the last time we verified it.
Corrections
If a specification here is wrong, tell us through the contact page. We will correct it and note what changed and when.