Four Series 2 Drip Coffee Maker, 5-Cup, Removable Water Tank Matte Black

Premium automated pour-over precision in a compact, five-cup footprint

Typical price

$279

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Ravvy verdict

82.8 / 100

Buy the Ratio Four if you want top-tier pour-over quality in a metal-bodied machine, provided you are willing to sacrifice smart features for pure taste.

Best for: Single drinkers and couples who value specialty coffee quality over high-volume output
Buy it if: You want high-quality metal construction with a modern aesthetic.
Skip it if: You need a programmed pot waiting for them when they wake up.
Best alternative: Technivorm Moccamaster 53941 KBGV Select 10-Cup Coffee Maker, Polished Silver, 40 ounce, 1.25l (coffee purists and sustainability-minded homeowners)

How it scores on what matters

Space Efficiency94.0
Build Quality92.0
Extraction Precision89.5
Ease of Cleaning88.0
Feature Set65.0

Ravvy factor scores, 0 to 100, derived from specs, owner reviews and category norms.

What it is

The Ratio Four Series 2 brings high-end specialty coffee science to those who prioritize space and small-batch quality. Unlike standard drip machines that struggle to maintain heat and even saturation with small amounts of coffee, this model utilizes an automated bloom cycle and precise water dispersion. It is built to replicate the nuance of a manual pour-over while offering the convenience of a single button interface, housed in a sleek matte black metal chassis that feels significantly more substantial than plastic competitors. Practicality is front and center with the inclusion of a removable water tank, a feature often missing from luxury brewers. This makes filling the machine under low cabinets far less frustrating. While it lacks programmable timers or strength settings, it focuses entirely on the physics of extraction. It is an unapologetic specialty tool for users who want the highest possible cup quality from 5 to 20 ounces of coffee without the clutter of a full-sized machine.

Ravvy AI insight

The Ratio Four fills a specific gap between cheap 5-cup drip machines and professional 12-cup brewers. Its metal construction and 5-year warranty justify the premium price point compared to plastic alternatives. However, the 3.8-star rating reflects a divide between users who appreciate the simplicity and those who expect more digital customization at this cost.

Generated from owner feedback, product specs, pricing, and retailer data. Last updated Aug 21, 2026.

What owners praise

High-quality metal construction with a modern aesthetic
Removable water tank for easy filling and cleaning
Automated bloom cycle improves flavor extraction
Compact footprint ideal for small apartments
Exceptional 5-year manufacturer warranty
Simple one-button operation

What to know first

Lacks a programmable timer or clock
Higher price point for a 5-cup capacity
Glass carafe requires careful handling

Specifications

UPC: 850017079755
GTIN: 850017079755
Brand: Ratio
Color: Matte Black
Style: Modern
Material: Metal
Brand Name: Ratio
Model Name: Ratio Four Series 2
Unit Count: 1 Count
Filter Type: Reusable
Item Weight: 5.22 kg
Part Number: 850017079755
Model Number: R472-G-1
Power Source: Electric
Operation Mode: Fully Automatic
Number of Items: 1
Special Feature: Removable Water Tank Compact Footprint One-Button Brewing 5-Cup Capacity Pour Over Inspired Bloom Cycle See more
Coffee Input Type: ground_coffee
Coffee Maker Type: Drip Coffee Machine
Product Dimensions: 12"D x 14"W x 15"H
Included Components: Carafe
Warranty Description: 5-Year Manufacturer
Item Dimensions D x W x H: 12"D x 14"W x 15"H
Specific Uses For Product: Drip Coffee Maker
Global Trade Identification Number: 00850017079755
Other Special Features of the Product: Removable Water Tank Compact Footprint One-Button Brewing 5-Cup Capacity Pour Over Inspired Bloom Cycle

How to get the most out of it

Perfecting the Ratio

For the best 5-cup pot, use a scale to measure your coffee beans. Ratio recommends a 1 to 16 ratio of coffee to water for a balanced profile that matches the machine's flow rate.

Ownership tips

tip

Use Freshly Ground Coffee

Because this machine uses a specific bloom cycle to degas coffee, you will get the best results using beans ground right before brewing. This allows the water dispersion to extract maximum sweetness and aroma.

care

Clean the Tank Regularly

Since the water tank is removable, take advantage of it by washing it with mild soap weekly. This prevents mineral buildup and ensures the water entering the heater is always fresh.

Frequently asked questions

Can I program this machine to brew at a specific time?

No, the Ratio Four is designed with a minimalist one-button interface and does not include a clock or programmable start timer. It focuses on immediate quality over scheduled convenience.

Does it use standard coffee filters?

Yes, it is compatible with standard #2 cone filters. You can use paper filters for a cleaner cup or a reusable metal cone filter if you prefer more body and oils in your coffee.

How long does it take to brew a full 5-cup pot?

A full cycle typically takes between 4 to 6 minutes. This includes the bloom phase where the machine pauses to saturate the grounds before continuing the main brew.

Is the carafe thermal or glass?

This specific model comes with a high-quality glass carafe. It is designed for immediate serving to ensure the coffee does not sit and develop a bitter taste from prolonged heating.

Where can you buy the Four Series 2 Drip Coffee Maker, 5-Cup?

Four Series 2 Drip Coffee Maker, 5-Cup is sold through Amazon, and Ratio also lists it through its own site and major retail partners. The buy link on this page goes straight to the current Amazon listing, which is where stock and pricing update most often.

How much does the Four Series 2 Drip Coffee Maker, 5-Cup cost?

The last price Ravvy recorded was $279. Retail pricing on coffee & espresso moves with promotions and stock, so treat that figure as a reference point and check the live listing before you buy.

How do you get the Four Series 2 Drip Coffee Maker, 5-Cup for a cheaper price?

Three tactics work best: watch for holiday and seasonal sale events when coffee & espresso discounts run deepest, compare the open box or renewed listing against new stock, and check whether Ratio is running a coupon or bundle. Adding the product to your Ravvy wishlist keeps it handy so you can revisit the listing when prices drop.

Is the Four Series 2 Drip Coffee Maker, 5-Cup in stock right now?

It was in stock at our last check. Availability on popular coffee & espresso can change within hours, so the live listing is the source of truth.

Is the Four Series 2 Drip Coffee Maker, 5-Cup worth it?

Ravvy scores it 82.8 out of 100. The strongest argument for it is high-quality metal construction with a modern aesthetic. The trade off to weigh is lacks a programmable timer or clock.

Who should buy the Four Series 2 Drip Coffee Maker, 5-Cup?

It fits single drinkers and couples who value specialty coffee quality over high-volume output If that does not describe your situation, compare it with the other options in Coffee & Espresso before committing.

What are the key specs of the Four Series 2 Drip Coffee Maker, 5-Cup?

UPC: 850017079755. ASIN: B0DKGCL1MR. GTIN: 850017079755. Brand: Ratio.

What are good alternatives to the Four Series 2 Drip Coffee Maker, 5-Cup?

Compare it against the other scored picks in Coffee & Espresso on Ravvy. We rank every option in that group by the same criteria, so you can see which model wins on value, quality, and owner sentiment before you decide.

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