La Marzocco Linea PB AV

The La Marzocco Linea PB is a professional-grade, multi-group espresso machine that is a cornerstone of the modern specialty coffee industry. It's a comprehensive update to the iconic Linea Classic, featuring a refined design and advanced electronics. The "PB" stands for Piero Bambi, who designed and named the machine, while "AV" stands for Auto-Volumetric, a key feature that simplifies a barista's workflow.

Here's a breakdown of its key features:

1. Dual Boiler System:

The Linea PB is built with separate, independent boilers for each group head (brew boilers) and a large boiler for steam. This design ensures absolute thermal stability for espresso extraction, as the brew water temperature is not affected by the steam boiler's demand.

The multiple boilers allow for precise temperature control and powerful, consistent steam for milk frothing, even during the busiest periods.

2. Auto-Volumetric Dosing (AV):

The AV model is equipped with a flowmeter in each group head that measures the volume of water dispensed. Baristas can program the machine to automatically stop the shot at a pre-set volume, ensuring shot-to-shot consistency and reducing the need for constant manual monitoring.

The machine also features a digital display that shows the shot time, allowing baristas to monitor consistency and make adjustments as needed.

3. Advanced Electronics and User Interface:

The Linea PB features a new electronic system with an intuitive digital display. Baristas can easily control and program key functions directly from the machine's interface, including:

• Boiler temperatures (via a dual PID)
• Brewing volume
• Hot water tap dose
• Auto-backflush programs

The electronics also offer features like an ECO mode to reduce power consumption during idle periods and a USB port for firmware updates.

4. Saturated Brew Groups:

The saturated group heads are a hallmark of La Marzocco machines. They are directly integrated with the brew boiler, which prevents the water from losing heat on its way to the coffee grounds. This feature is crucial for maintaining thermal stability and extracting a consistent shot.

5. Premium Construction and Design:

The machine features the iconic La Marzocco polished stainless steel body with updated, simplified lines and a lower profile. This design improves a barista's workspace and visibility.

It is hand-built in Florence, Italy, and uses high-quality components, including stainless steel portafilters and ruby flow restrictors that resist scale formation and erosion.

The La Marzocco Linea PB AV is a robust and intelligent workhorse, designed to deliver exceptional espresso quality and efficiency in a high-volume commercial setting.