elegant engineering for superior temperature control


The GB5 has redefined the standard for temperature stability in modern espresso equipment.

Released in 2005, the GB5 features the Thermal Stability System, which was designed in response to the demand for better temperature stability in the industry. Equipped with a CPU board, the GB5 combines gracious lines and harmonious curves with powerful technological advancements, in line with classic La Marzocco design and spirit. This was the machine used in the World Barista Championship from 2005 to 2009, and was named for Piero Bambi’s wife, Giovanna Bambi. The machine is an understated companion to any coffee bar.

Product Sheet

temperature stability

A dynamic preheater assembly ensures that water entering the coffee boiler is at precisely 170 degrees. 170-degree water replaces the hot water exiting the group, reducing temperature swings in the coffee boiler. An algorithm-based PID temperature controller further reduces temperature fluctuation in the coffee boiler. A group cap designed by Piero Bambi and an integrated ruby flow restrictor reduces channeling and ensures that water never leaves the saturated area of the coffee boiler; this eliminates the introduction of temperature instability during the brewing process.


dual boilers
Separate boilers optimize espresso brewing and steam production.

saturated groups
Ensure unsurpassed thermal stability, shot after shot.

hot water economizer
Enables you to fine-tune the tap water temperature for rinsing.

dual PID (coffee & steam)
Allows you to electronically control coffee & steam boiler temperatures.

ruby flow restrictors
Ruby flow restrictors resist scale formation and erosion.

thermal stability system
As water passes through each element, temperature is further stabilized.


barista lights
LED lighting allows you to focus on your extraction and the cup.

lcd interface and shot timers
Intuitive programming makes it easy to adjust machine parameters.

personalized color
Customizable colors based on the RAL color system on request.


Available Models
2, 3 or 4 groups.

Available Configurations
Semi-Automatic (EE), Auto-Volumetric (AV).

Personalized Colors & Finishes
Customizable colors based on the RAL color system, on request.

product specifications

Specifications 2grp 3grp 4grp
Height (in) 22 22 22
Width (in) 30 38 47
Depth (in) 25 25 25
Weight (lbs) 162 201 280
Voltage (VAC, phase, Hz) 208-240, 1, 60 208-240, 1, 60 208-240, 1, 60
Amperage (A) 30 50 50
Element Wattage (W) 4600 6100 8000
Coffee Boiler (liters) 3.4 5 6.8
Steam Boiler (liters) 7 11 14.5
Certifications UL-197, NSF-8, CAN/CSA-C22.2 No. 109

preventative maintenance checklists

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