La Marzocco KB90 Espresso Machine - 13.6L Boiler Capacity, Dual PID
La Marzocco KB90 Espresso Machine - 13.6L Boiler Capacity, Dual PID
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The La Marzocco KB90 sets a new benchmark for high-volume café performance, engineered specifically to make crafting exceptional espresso faster, cleaner, and more efficient. Representing the ultimate evolution of the iconic Linea PB form, this machine dramatically optimises barista workflow while significantly reducing physical strain. Its revolutionary 'Straight In' portafilter system eliminates the traditional twisting motion, easing the physical repetitive strain on the barista’s wrist and accelerating speed of service during peak rush hours.
To maintain pristine operating conditions without disrupting service, the KB90 features an automated Steam Flush function that delivers a burst of steam and hot water after every extraction, rapidly removing coffee residue and preventing off-flavoured buildup. Precision is further elevated by an advanced drip prediction algorithm, which automatically terminates the extraction at the perfect moment to ensure precise cup yields, even when seamlessly switching between different single origins, blends, or decaf options. Additionally, the machine offers an unprecedented level of aesthetic expression, with outer panels engineered to allow virtually infinite customisation combinations.
La Marzocco KB90 Espresso Machine Brochure
La Marzocco KB90 Espresso Machine User Manual
La Marzocco KB90 Espresso Machine Spec Sheet
La Marzocco KB90 Espresso Machine Parts Guide
You get this when you Purchase through Prime Coffee Suppliers:
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Free! Delivery (Worth £95): 1-3 days Free Standard UK Delivery, Direct from
UK Warehouse. -
Free! Bronze Service Plan (Worth £1200): Gives you 1-year parts coverage,
labour or call-out fees, direct phone support for quick technical help. Click here for more info about this plan
- Free! Installation, Water Filter and on-site training (Worth £350)
- Free! 5KG of MONT58 Sustainable Coffee Beans (Worth £150): Start your journey with premium beans on us.
- 10 Trees planted with every order of a La Marzocco KB90 Espresso Machine With our environmental Project through Ecologi.
Features
Straight-In Portafilter: A revolutionary layout that allows the barista to insert the portafilter directly from the front, completely removing the traditional twist-and-lock wrist movement to significantly lower repetitive physical fatigue.
Auto Steam Flush: Automatically shoots a burst of steam and a hot water rinse immediately following an extraction, purging coffee residue to reduce back-flushing down-time during service rushes.
Dual Boiler System & Saturated Groups: Incorporates distinct boilers to isolate espresso brewing from high-capacity steam output while maintaining robust temperature consistency shot-after-shot.
Independent Brew Boilers: Every individual group head houses its own micro-boiler, letting baristas optimize precise extraction temperatures for different origins and custom blends simultaneously.
Dual PID Temperature Control: Enables digital adjustment over temperatures for both the brew and steam boilers.
Auto Brew Ratio (ABR) & Drip Prediction: Premium option equipping the drip tray with built-in precision scales that work alongside an internal predictive algorithm to automatically kill the extraction exactly on target mass.
Pro Touch Steam Wands: High-performance steam arms engineered with vacuum insulation to remain totally cool to the touch for barista safety.
Front-Accessible Steam Valve: Redesigned setup allows technicians to service or rebuild the steam assembly from the front face without removing the valve housing from the machine.
Hot Water Economizer: Provides full control to adjust tap water temperature limits for clean rinsing and tea prep.
Infinite Aesthetic Customization: Structural paneling engineered to accept custom finishes, wraps, and colors for a personalized look.
Specification of La Marzocco KB90 Espresso Machine
| Specification | 2-Group Configuration | 3-Group Configuration |
| Height | 45 cm (17.5 in) | 45 cm (17.5 in) |
| Width | 81 cm (32 in) | 105 cm (41.5 in) |
| Depth | 62 cm (24.5 in) | 62 cm (24.5 in) |
| Net Weight | 77 kg (170 lbs) | 101 kg (223 lbs) |
| Coffee Boiler Volume | 2 x 1.3 Litres | 3 x 1.3 Litres |
| Steam Boiler Volume | 7 Litres | 11 Litres |
| Element Wattage | 5,400 Watts | 7,300 Watts |
| Voltage Options | 220V - 240V | 220V - 240V |
| Amp Service Required | 30 Amps | 50 Amps |
| Available Automation | AV (Auto-Volumetric) / ABR | AV (Auto-Volumetric) / ABR |
Why the La Marzocco KB90 is the Smart Choice for Your Business
In a fast-paced specialty coffee market, a café's success rests on three fundamental pillars: speed of service, product consistency, and staff retention. As foot traffic scales, standard commercial espresso setups can inadvertently create operational bottlenecks and increase staff physical fatigue. The La Marzocco KB90 is specifically engineered as a high-volume solution to these challenges, turning the espresso bar from a bottleneck into a highly optimized profit driver.
Redefining Throughput and Protecting Your Staff
The most immediate business advantage of the KB90 is its revolutionary Straight-In Portafilter system. By removing the traditional twist-and-lock motion, it reduces physical strain on the barista's wrist by up to 12 times. In a busy environment, this ergonomics boost directly translates to faster shot preparation and significantly mitigates repetitive strain injuries among your team. Happy, pain-free baristas work faster, engage better with customers, and experience less turnover—saving your business substantial hiring and training costs.
Combined with the automated Steam Flush function, which purges coffee residue with a burst of steam and hot water after every shot, your team no longer wastes critical seconds manually wiping down screen elements during peak rush hours. The machine effectively keeps itself clean, allowing your baristas to focus entirely on maintaining throughput and driving sales.
Surgical Consistency That Drives Customer Loyalty
Speed means nothing if the beverage quality suffers under pressure. The KB90 protects your brand reputation with independent group boilers that isolate brewing temperatures perfectly, ensuring thermal stability shot-after-shot.
When equipped with the optional Auto Brew Ratio (ABR) and Drip Prediction technology, the machine automatically controls target mass in the cup using integrated precision scales. Human error is eliminated from the equation. Whether your staff is switching between a house blend, single-origin guest roast, or decaf, the KB90 precisely self-terminates the shot exactly when your recipe demands it. This guarantees that every customer receives the exact same premium beverage experience regardless of how busy the bar is, locking in the repeat customer base that sustains long-term business growth.
Which Model Suits Your Space?
| Feature | 2-Group Configuration | 3-Group Configuration |
| Best For | Medium-Volume Bars | High-Volume Venues |
| Boiler Capacity | 2 x 1.3L (Coffee) + 7L (Steam) | 3 x 1.3L (Coffee) + 11L (Steam) |
| Power Output | 5,400 Watts | 7,300 Watts |
| Width | 810 mm | 1050 mm |
The Verdict
If you need a robust, ultra-fast espresso machine that delivers surgically consistent results while protecting your staff from physical fatigue, the La Marzocco KB90 is the industry-leading choice for pure, dependable performance.
Demystifying the La Marzocco KB90: Hardware vs. Software Configurations
When tailoring the high-volume La Marzocco KB90 for your coffee business, you will encounter two primary decisions that define how your machine operates and sits on your counter. Many buyers confuse these options, but they represent entirely different components of your setup: the physical hardware layout (Foot Size) and the internal automation electronics (AV vs. ABR).
Understanding how these combinations interact is key to building your ultimate workflow station.
1. The Physical Choice: Tall Feet vs. Small Feet
The choice between foot profiles has everything to do with workspace ergonomics, bar height, and cleaning management. It is a structural option that does not impact how the coffee is brewed.
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Tall Feet (High Legs): This configuration raises the body of the machine roughly 7.5 cm (3 inches) off the counter. It is highly recommended for busy, high-volume cafes. The extra clearance allows baristas to easily slide steam towels and brushes completely underneath the machine to clear trapped coffee grounds or milk spills without having to lift the heavy equipment. It also brings the group heads up to a more ergonomic level if your counter is built lower.
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Small Feet (Standard Legs): Keeps the machine sitting lower to the counter surface, offering a sleek, low-profile presentation. This is ideal if your bar structure is already high, ensuring baristas can easily maintain unobstructed eye contact and conversation with customers over the cup-warmer tray.
2. The Tech Choice: AV (Auto-Volumetric) vs. ABR (Auto Brew Ratio)
This configuration dictates the internal system that manages how your espresso extractions are measured and cut off.
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AV (Auto-Volumetric Version): The standard automatic model. It measures the extraction using internal flow meters that count the volume of water entering the coffee puck. Once programmed, pressing a button yields the same output of water every time. It is straightforward and highly reliable, but it does not account for changes in grind size or puck density, meaning the final weight in the cup can still fluctuate slightly if the grind shifts.
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ABR (Auto Brew Ratio Version): The premium technology upgrade. The ABR model features surgical-grade scales integrated directly into the drip tray grid underneath each group head. Instead of counting water volume, it reads the actual live mass of the liquid dripping into the cup. Using a smart drip prediction algorithm, it learns when to shut off the brew valve to land exactly on your target weight (e.g., exactly 36.0 grams) regardless of grind or beans.
Configuring Your Machine
Because these options are independent, they can be combined to match your exact business preferences:
| Configuration | What it Determines | Options Available |
| Physical Stance | Counter clearance, cleanup ease, and line-of-sight ergonomics. | Small Feet or Tall Feet |
| Internal Brain | The method used to measure and stop your espresso extractions automatically. | AV (Flow meters) or ABR (Tray scales) |
The Verdict: If your primary focus is keeping a spotlessly clean station and minimizing maintenance stress, opting for Tall Feet is a smart operational choice. If your goal is ultimate recipe precision without your baristas needing external pocket scales, stepping up to the ABR version is the definitive choice for your venue.
Prime Coffee Suppliers Explores Next-Gen Commercial Innovation at the London Coffee Festival 2026
The London Coffee Festival at the iconic Truman Brewery returned as the ultimate global hub for specialty coffee innovation. Among the industry leaders navigating the buzzing festival floor was the team from Prime Coffee Suppliers, hunting for high-capacity technological advancements to scale up the workflows of their commercial clients. For a supplier dedicated to sourcing heavy-duty, high-performance machinery, the primary destination was unmistakable: the massive, multi-tiered commercial showcase hosted by festival headline sponsor, La Marzocco.
Sighting the Icons: La Marzocco's Heavy-Duty Espresso Lineup
La Marzocco’s presence dominated the venue, providing Prime Coffee Suppliers with a first-hand look at how the manufacturer is redefining high-volume commercial workflow, speed, and extraction stability.
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The High-Volume Powerhouses: On the main festival floor and across the bustling True Artisan Café setups, the team observed elite, rapid-output machinery like the ergonomic KB90, the cutting-edge Strada X, and the ultra-dependable Linea PB running under true commercial pressure.
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Ergonomic Workflow Gains: Witnessing the KB90's Straight-In portafilter design and automated Steam Flush system operating in real-time during heavy guest rushes highlighted exactly how these machines slash drink ticket times, reduce barista fatigue, and eliminate service bottlenecks during peak commercial hours.
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The Premium Hospitality Standard: Up in the exclusive LCF Club Lounge, the timeless La Marzocco GB5 took center stage, proving its status as a commercial workhorse by effortlessly anchoring the premium bar to serve high volumes of espresso martinis and flat whites to the industry's elite.
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The Prosumer & Office Bench: Moving towards low-volume commercial applications at the La Marzocco Home stand, the team got hands-on with the compact Linea Mini and Linea Micra, exploring how commercial-grade temperature stability has been seamlessly shrunken down for boutique offices, studio setups, and high-end hospitality environments.
Commercial Advantage Directory
| Commercial Model | Core Business Benefit |
| La Marzocco KB90 | Straight-In portafilters and auto-purge systems maximize speed and protect barista health. |
| La Marzocco Strada X | Advanced pressure profiling provides ultimate extraction control for specialty origin beans. |
| La Marzocco Linea PB | Unrivaled thermal stability and robust build quality handle relentless, back-to-back rushes. |
| La Marzocco GB5 | Elegant, classic aesthetics paired with heavy-duty internal architecture, ideal for high-end bars. |
Next-Gen Commercial Grinding and Dose Automation
Beyond espresso extraction, the festival served as a critical launching pad for high-efficiency commercial grinding solutions. Prime Coffee Suppliers spent significant time at the specialized Demo Bar, evaluating La Marzocco's latest companion gear designed to eliminate bean waste and automate precision, including the Pico and the highly anticipated Jay Grinder.
Watching live masterclasses on precision dial-in, the team analyzed how new commercial burr geometries and automated gravimetric technology ensure exact dose consistency down to a fraction of a gram. For commercial operators, this level of grinding automation represents a massive leap forward in cost control, removing human error and ensuring every single shot protects the business's bottom line.
About the Brand La Marzocco
La Marzocco has always focused on the values of integrity, impact, curiosity, courage and celebration. This is what has allowed them to continually innovate and persevere in the manufacturing of the finest in class specialty coffee equipment.
Piero Bambi
