# Ratio Six (Series 2)

- Source: https://stierproducts.com/products/ratio-six-series-2
- Category board: https://stierproducts.com/categories/coffee-makers
- Placement: #3 of 16 in Coffee Makers, A tier
- Brand: Ratio
- LP on this board: 749
- Last researched: 2026-09-13T02:26:08.897Z
- Method: https://stierproducts.com/methodology
- Dataset: https://doi.org/10.5281/zenodo.22062813 - every board at once, one dated snapshot per release, same licence, prices and photographs left out
- Reuse: Text, rankings, tier assignments, LP values and verdicts are free to quote and reuse with attribution to stierproducts and a link to the source URL (CC BY 4.0: https://creativecommons.org/licenses/by/4.0/). Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.

## Verdict

Small-batch brewer that delivers café-quality pour-over with a simple interface.

## For

- Café-quality pour-over
- Intuitive interface
- Solid build quality
- Benchmark cup quality
- Included in top-tier lists by Serious Eats and Wirecutter

## Evidence

Consolidated from 34 cited sources across 27 outlets

| Outlet | Said by | Stance | Link | Link status |
| --- | --- | --- | --- | --- |
| Coffee Slang | Nick Puffer | B | https://coffee-slang.com/product-review/ratio-six-series-2-coffee-machine-automatic-drip-coffee-maker-review/ | fetched and confirmed |
| Bon Appétit | Noah Kaufman | B | https://www.bonappetit.com/story/best-drip-coffee-makers?srsltid=AfmBOopNR2yGCrMQQF93JBip4FWsWPKmigS_4joMNwz9_lMsndHJ742Z | fetched and confirmed |
| Alternative Brewing | Alternative Brewing | A | https://alternativebrewing.com.au/products/ratio-six-coffee-maker?srsltid=AfmBOorCcA-cvybgJE9aotQbvT49sODeuR_70CgcbYiCWy8V0IfpOd1Y | fetched and confirmed |
| Hilly Shore Labs | BrewSift | B | https://www.brewsift.com/products/ratio-six-series-2 | fetched and confirmed |
| TechGearLab | Michelle Powell | B | https://www.techgearlab.com/topics/kitchen/best-coffee-maker | fetched and confirmed |
| WIRED | Matthew Korfhage | C | https://www.wired.com/story/plastic-free-coffee-makers/ | fetched and confirmed |
| Drip Roast | Vignesh Selvasundar | B | https://www.driproast.com/best-automatic-pour-over-coffee-machine/ | fetched and confirmed |
| Seattle Coffee Gear | Seattle Coffee Gear | B | https://www.youtube.com/watch?v=lV_wXFLtxog | fetched and confirmed |
| Kitchen Hacks | Kitchen Hacks | B | https://www.youtube.com/watch?v=-BJwfk6e9ZA | fetched and confirmed |
| Top Rated Review | Top Rated Review | B | https://www.youtube.com/watch?v=0Mj0Au4Cdi8 | fetched and confirmed |
| Drew Coffman | Drew Coffman | C | https://www.youtube.com/watch?v=6-7TLk1uaZQ | fetched and confirmed |
| Chase Reeves | Chase Reeves | B | https://www.youtube.com/watch?v=H9rcyLBlHX0 | fetched and confirmed |
| Alternative Brewing | Alternative Brewing | B | https://www.youtube.com/watch?v=hX3TUR5obRY | fetched and confirmed |
| Coffeeology | Coffeeology | B | https://www.youtube.com/watch?v=3ijAgggB0AI | fetched and confirmed |
| Hello GoodBuy | Hello GoodBuy | B | https://www.youtube.com/watch?v=v1wQx28DjQ0 | fetched and confirmed |
| Seattle Coffee Gear | Seattle Coffee Gear | B | https://www.youtube.com/watch?v=fIPqm3VY_Og | fetched and confirmed |
| Seattle Coffee Gear | Seattle Coffee Gear | B | https://www.youtube.com/watch?v=xmd4iMZ39Qk | fetched and confirmed |
| The Coffee Magazine | The Coffee Magazine | B | https://www.youtube.com/watch?v=dzHrYOOPmio | fetched and confirmed |
| Tim DaGraca | Tim DaGraca | B | https://www.youtube.com/watch?v=ymT3znBqDDo | fetched and confirmed |
| Crema | Crema | B | https://www.youtube.com/watch?v=D0OixCTwAQ0 | fetched and confirmed |
| Mirror Coffee Roasters | Mirror Coffee Roasters | B | https://www.youtube.com/watch?v=qqjFs0cUemE | fetched and confirmed |
| Seattle Coffee Gear | Seattle Coffee Gear | B | https://www.youtube.com/watch?v=vp9JNWXu_Sw | fetched and confirmed |
| Kitchen Needs | Kitchen Needs | B | https://www.youtube.com/watch?v=rQtCpIF8Y_4 | fetched and confirmed |
| Fuelin Coffee | Fuelin Coffee | B | https://www.youtube.com/watch?v=6LzA5BpRINo | fetched and confirmed |
| Zux Dom | Zux Dom | B | https://www.youtube.com/watch?v=y4R7GL9ZPaU | fetched and confirmed |
| Kakadu Coffee | Kakadu Coffee | B | https://www.youtube.com/watch?v=XHxwj1ccu-Q | fetched and confirmed |
| The Great Reviewer | juan.e.bodniza@gmail.com | B | https://thegreatreviewer.com/home-kitchen-reviews/best-coffee-makers-2026/ | fetched and confirmed |
| Cocinare | Shopify API | B | https://cocinare.com/blogs/journals/best-automatic-pour-over-coffee-machine-picks?srsltid=AfmBOoqkmZ65OEYFoLBHGiPbHKm76yd4hlTvH86Xhaw4NE0FRxH9SLzG | fetched and confirmed |
| Instagram | - | B | https://www.instagram.com/reel/DZ4poqpOqDf/ | fetched and confirmed |
| Bon Appétit | Mark Marino | B | https://www.bonappetit.com/story/cyber-monday-coffee-deals-12-01-2025?srsltid=AfmBOoqOcQHK4TYCi4OvZlb7PIwW-H_rYVD7LY_--Kk-3pDDp6Y6p7aQ | fetched and confirmed |
| Serious Eats | - | - | https://www.seriouseats.com/the-best-automatic-drip-coffee-makers | outlet blocks automated checks |
| Wirecutter | - | - | https://www.nytimes.com/wirecutter/reviews/best-coffee-maker/ | fetched and confirmed |
| Wired | - | - | https://www.wired.com/gallery/best-coffee-makers/ | fetched and confirmed |
| Serious Eats | - | - | https://www.seriouseats.com/best-coffee-makers-7484583 | outlet blocks automated checks |

## Nearest alternatives on this board

| Rank | Product | Tier | Page |
| --- | --- | --- | --- |
| 1 | Technivorm Moccamaster KBGV Select | S | https://stierproducts.com/products/technivorm-moccamaster-kbgv-select |
| 2 | OXO Brew 9-Cup Coffee Maker | S | https://stierproducts.com/products/oxo-brew-9-cup-coffee-maker |
| 4 | Fellow Aiden Precision Coffee Maker | A | https://stierproducts.com/products/fellow-aiden-precision-coffee-maker |
| 5 | Breville Precision Brewer Thermal | B | https://stierproducts.com/products/breville-precision-brewer-thermal |
| 6 | Ninja 12-Cup Programmable Coffee Brewer (CE251) | B | https://stierproducts.com/products/ninja-12-cup-programmable-coffee-brewer-ce251 |
| 7 | Bonavita Connoisseur 8-Cup One-Touch Coffee Maker | C | https://stierproducts.com/products/bonavita-connoisseur-8-cup-one-touch-coffee-maker |
| 8 | Café Specialty Drip Coffee Maker | C | https://stierproducts.com/products/caf-specialty-drip-coffee-maker |
| 14 | Keurig K-Express | F | https://stierproducts.com/products/keurig-k-express |
| 15 | Mr. Coffee 12-Cup Programmable | F | https://stierproducts.com/products/mr-coffee-12-cup-programmable |
| 16 | Keurig K-Supreme Plus SMART | F | https://stierproducts.com/products/keurig-k-supreme-plus-smart |

The full board is at https://stierproducts.com/categories/coffee-makers.

## Frequently asked questions

### Who is the Ratio Six (Series 2) for?

Buyers who want a Moccamaster-grade drip machine with a modern look. It is Serious Eats' current pick for best drip coffee maker and sits in A tier at rank 3 on our coffee makers board, with a die-cast aluminium body, minimal plastic in the brew path, a 5-year warranty and almost no electronics to fail. If you want the longest proven track record, the Technivorm Moccamaster KBGV Select in S tier is the safer buy. If you want brew profiles and firmware features, the Fellow Aiden Precision Coffee Maker is the other A tier option.

### How long does the Ratio Six (Series 2) last?

Long enough that Ratio backs it with a 5-year warranty, matching the Technivorm Moccamaster KBGV Select. The machine is mostly metal with almost no electronics, which removes the failure points that kill most brewers. Our research recorded no cons for it. The one thing it lacks is the Moccamaster's decades of owner history, so a 20-year lifespan is expected rather than proven.

### What changed in Series 2 of the Ratio Six?

Series 2 addressed the carafe complaints that owners raised about the early units. That is the revision our research credits for the machine's current standing. Beyond the carafe, the formula is the same: a die-cast aluminium body, minimal plastic in the brew path and a simple control that leaves little to break.

### Should I buy the Ratio Six (Series 2) or the Technivorm Moccamaster KBGV Select?

Both carry a 5-year warranty and a repairable, low-electronics design, so choose on history and looks. The Technivorm Moccamaster KBGV Select ranks first on our board and is the only S tier product because units are routinely still running after 10 to 20 years and parts are sold for nearly every component. The Ratio Six (Series 2) is the modern Moccamaster alternative and Serious Eats' top drip pick. If you want the proven heirloom, buy the Moccamaster. If you prefer the Ratio's design, you give up little.

### How do you clean and descale the Ratio Six (Series 2)?

Rinse the carafe and filter basket after every pot and wash them properly a few times a week. Descale every one to three months depending on water hardness: run a descaling solution through a brew cycle, then two or three cycles of plain water. Filtered water slows scale buildup. With so little plastic or electronics in the machine, regular descaling is the main maintenance it needs.

## What this tier means

- A: Excellent. Strongly recommended, beaten only by the very best.

## How to read this

- Each category is researched in four independent runs, one per lens (expert consensus, value, reliability, community pulse). Every run ranks a board of candidates that deliberately includes products buyers cross-shop but should avoid. Placements score on a ranked ladder (LP), and tiers are derived from LP, so no tier is ever assigned by hand.
- LP is this product's points on its own category ladder. It is comparable within a category and not across categories.
- Link status reports what our pre-publication link check found when it fetched the cited URL. It says nothing about the quality of the review.
- A citation with no usable link is listed rather than dropped, and is excluded from the counted total above.

## Image

https://stspimgdevmfyk46r5vwkay.blob.core.windows.net/images/products/ratio-six-series-2.webp

Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence.