Overview
The Ratio Six is a beautifully designed automatic drip coffee brewer from Portland-based Ratio Coffee, a company founded on the principle that the best coffee equipment should be both functionally excellent and aesthetically outstanding. The Six achieves SCA Gold Cup certification with a brew process that mimics the techniques of skilled manual pour-over baristas — a controlled bloom phase saturates the grounds before full brewing begins, promoting even extraction and enhanced flavor development. The water shower head distributes water across the coffee bed in a spiral pattern similar to a hand pour-over technique. A precision thermostat maintains brew temperature within the SCA recommended range throughout the cycle. The machine uses a flat-bottom filter basket for even water distribution, and the included thermal carafe keeps coffee hot for hours without the flavor degradation caused by hot plates. What truly distinguishes the Ratio Six is its design — a die-cast aluminum body available in matte black, matte white, and stainless steel, with clean lines and minimal controls that make it a genuine kitchen centerpiece. A single switch is the only control — no buttons, no displays, no programming. Fill the tank, add coffee, flip the switch. The Ratio Six proves that advanced brewing technology and stunning design can coexist in a machine that makes exceptional coffee effortlessly.
The Ratio Six comes equipped with PID temperature control for precise brewing, pre-infusion for even extraction. It features a thermoblock boiler system made of stainless steel. The vibratory pump delivers consistent pressure for optimal extraction.
Priced at $365, the Ratio Six is designed for home baristas looking for quality without breaking the bank.
In terms of build quality, the Ratio Six is a substantial machine, weighing in at 3.9 kg, manufactured in United States, drawing 1400W of power. With dimensions of 279 x 197 x 362 mm (W×D×H), make sure you have adequate counter space. The built-in water reservoir holds 1250 ml, making it easy to set up anywhere in your kitchen.
Pros & Cons
Pros
- PID temperature control ensures consistent extraction temperature shot after shot
- Pre-infusion gently saturates the coffee puck before full pressure, improving extraction evenness
- Stainless steel boiler is corrosion-resistant and easy to maintain
- Exceptional value — PID temperature control at a budget-friendly price point
Cons
- Thermoblock heating may not match the temperature stability of traditional boiler designs
- Vibratory pump can be noisy and may not last as long as rotary alternatives under heavy use
Full Specifications
| Brand | Ratio |
|---|---|
| Model | Ratio Six |
| Category | other |
| Status | Current |
| Country of Origin | United States |
| Year Introduced | 2020 |
| Boiler Type | Thermoblock |
| Boiler Material | Stainless Steel |
| Pump Type | Vibratory |
| PID Control | Yes |
| Pre-Infusion | Yes |
| Pressure Profiling | No |
| Flow Control | No |
| Group Head | Flat Bottom Basket |
| Steam Wand | None |
| Water Source | Reservoir |
| Reservoir Capacity | 1250 ml |
| Cup Warmer | No |
| Dimensions (W x D x H) | 279 x 197 x 362 mm |
| Weight | 3.9 kg (8.6 lbs) |
| Wattage | 1400 W |
| Voltage | 120V |
| MSRP | $365 |
Our Verdict
The Ratio Six from Ratio is a capable machine in its category. At this entry-level price point, it offers a solid introduction to home espresso. Remember that the grinder matters at least as much as the machine — budget accordingly. Consider your workflow needs (straight espresso vs. milk drinks), counter space, and grinder pairing when making your final decision.
Frequently Asked Questions
Is the Ratio Six good for beginners?
The Ratio Six is a solid entry point for beginners at $365. It's affordable enough to learn on without a major financial commitment. Pair it with a capable grinder and you'll be making genuine espresso quickly.
How often does the Ratio Six need maintenance?
Regular maintenance includes daily backflushing (for machines with solenoid valves), weekly cleaning of the group head and portafilter, and descaling every 1-3 months depending on water hardness. Using filtered water significantly reduces scale buildup and extends machine life.
What grinder should I pair with the Ratio Six?
At this price point, budget at least as much for a grinder as the machine itself. Popular choices include the Eureka Mignon series ($200-$400), Baratza Sette 270 ($300-$400), or a hand grinder like the 1Zpresso JX Pro ($160) for excellent grind quality on a budget.
Recommended Grinder Pairings for the Ratio Six
A good grinder is essential for getting the most out of your espresso machine. Here are some grinders that pair well at this price level:
