Edwin Martinez of Onyx Coffee is one of those people who makes you ...
The best part of your day just got better.
Simplify your routine.
The Ratio removes variables like water temperature, extraction time, and pour over pattern so you can worry less about making your coffee, and more about drinking it.
Elevate your taste.
Making coffee at home or office shouldn’t feel like a compromise. We’ve engineered a pour over style system with the precision of high-end espresso machines. You’ll taste the difference.
Enjoy it for life.
No plastic screws, tubes, or environmentally harmful pods. Ratio is hand assembled in the USA from cast metal, borosilicate glass, and real hardwoods, and is backed by a 5-year warranty.
Ratio Eight Coffee Maker – Dark Cobalt
Starting at $535
For a limited time, 0% financing on approved credit.
Finished in a refined navy-meets-black satin metallic coating with walnut wood trim, the Ratio Eight in Dark Cobalt combines precision brewing technique, top-quality construction, and a design that will elevate any environment. Designed for perfect partial batch brewing from 16 to 40 ounces, with a variable brewing algorithm to precisely mimic hand-made pour over coffee.
One Button Operation
The Ratio Eight detects the water in the tank and changes the brew cycle automatically given the amount of liquid. Just one touch and it all magically comes together.
Strength Of Character
We believe quality design deserves the best materials. That’s why we built the Ratio Eight with precision-machined aluminum, borosilicate glass, and a selection of premium hardwoods.
Under The Hood
A die-cast aluminum element heats water to an ideal extraction temperature. The water flows through a stainless steel shower head designed for even distribution over the grounds.
Deliciously Simulated Pour-Over
The Ratio Eight coffee maker simulates a skilled barista pour over, precisely metering the water flow during both the bloom and brew phases. All the taste without the work.
Engineered For Extraordinary Coffee
Ratio is smarter than your average coffee maker. Beneath the exterior is precise brewing science, automated. Ratio is equipped with a powerful heating element. Where lesser machines struggle to maintain the optimum temperature – brewing either too hot or too cold – Ratio delivers water at or near the optimum temperature of 200 degrees.
Gathering feedback from champion baristas and our customer base, we have developed a machine that emulates a manual pour-over, fine-tuned to provide a sweet cup that lacks bitterness.
Hot water poured over fresh roasted coffee causes a bubbly interaction called a “bloom.” The control board of Ratio applies a bloom cycle that allows the bloom to settle down before delivering the rest of the hot water. The result? More evenly extracted grounds and a more amazing cup of coffee.
Less Thinking And Better Drinking
Sometimes you just want a great cup of coffee without having to think about time, temperature, and other variables. We agree, which is why Ratio has just one button and no complicated programming. The subtle white lights on the front of the machine will tell you what’s happening with the brew cycle, but you probably have better things to do like catch up on your morning read. Ratio won’t mind at all.
Whether a 40-ounce carafe for the party or a 16-ounce cup for the road, both should be equally easy and delicious. That’s why we designed Ratio to automatically determine the amount of water you’ve added to the tank and adjust the brewing time accordingly.
You shouldn’t have to be a trained barista to make great coffee, and you shouldn’t have to be an engineer to clean your coffee maker. After brewing, simply rinse out the sturdy glass carafe with hot water, discard or compost the used paper filter, and you’re done. For deeper cleaning every other week or so, Ratio cleaning detergent will keep the water tank and carafe sparkling clean.
The Finest Materials
There are coffee machines that make great coffee and there are coffee machines that look great. Ratio is the first coffee machine that is truly both, combining form and function.
The materials chosen for the Ratio machine juxtapose the precision of high-tech with the irregularity of natural finishes. Precision die-cast aluminum bases with premium coatings are contrasted with figured hardwood.
Designed in Portland, Oregon, every Ratio machine is meticulously assembled by hand. While common appliances often have a built-in obsolescence and a life span of maybe 2-3 years, Ratio is designed to last.
Read the complete Ratio Eight brew guide for more details.
- Ratio Eight Coffee Maker
- Handblown borosilicate Glass Carafe
- Silicone Heat Lid
- Ratio Wash - 1 bottle
- Ratio Microfiber Towel
- Chemex Paper Filters - 4 sample filters
- Operation guide
- Power cord
- Brews up to 40oz. (eight 5oz. cups)
- 5-year warranty
- Powerful 1400 watt/110 or 230 volt heating element
- Dimensions: 13.5" deep x 9" wide x 14" tall
- Cantilevered top and base made of aerospace-grade die cast aluminum with a satin metallic finish
- Laboratory grade borosilicate water lines and carafe
- BPA-free copolymer water tank, or upgrade to borosilicate glass
- Carafe holds Chemex paper filters or Able Kone stainless steel filter
- Hand assembled in Portland, Oregon of custom American and imported components.
Ratio’s Eight designed by a Portland, Ore., company that is to coffee what vintage Marantz was to stereos. It’s by nerds, for nerds. Under all that brushed nickel and polished wood is a serious machine.