Technical check: E61, saturated groups & hybrids compared

Groupheads Compared: E61, Saturated Groups, and Hybrids

The grouphead is the part of your espresso machine that comes into direct contact with the coffee. It influences how stable the temperature remains during extraction and, consequently, which aromas end up in your cup. What you read here is our perspective as a coffee roastery. We perceive differences that are relevant to us. Others experience it differently, and that is equally valid.

The E61 Grouphead

The E61 is a classic. Built into countless machines since 1961, proven and loved. A massive brass construction with a thermosiphon system that stabilizes the temperature through natural convection. Machines from ECM, Rocket, and Profitec rely on the E61.

The character of the E61 is warm, round, and approachable. Many coffee lovers appreciate exactly this profile and want nothing else. The iconic chrome head is also a design statement that immediately shows: This is a real portafilter machine.

The Saturated Grouphead

In a saturated grouphead, the entire construction is permanently surrounded by hot water. The thermal mass is significantly greater than with an E61. This means: The temperature remains quite stable throughout the entire extraction, even if you pull several shots in a row.

We perceive that machines with saturated groupheads from La Marzocco and Arkel deliver an aroma profile that is more refined and complex. The nuances in light roasts come out more clearly, the balance between sweetness, acidity, and body is more finely resolved. But this is our perception, shaped by our way of roasting and extracting.

Hybrid Systems

Hybrid systems combine various technologies: thermoblock, boiler, and electronic control in new combinations. They heat up quickly, are often more compact, and offer digital control over the brewing temperature. Brands like WPM and Ascaso are forging their own paths here.

Hybrid systems show that the future of the espresso machine does not lie in a single concept. They open up new possibilities, especially for anyone who wants to save space or appreciates fast heat-up times. The results in the cup can be excellent.

Which Grouphead Is Right for You?

There is no better or worse grouphead. There is only the one whose character you like. An E61 sounds warm and familiar. A saturated grouphead sounds clear and precise. A hybrid system sounds modern and flexible. You can best find out which sound appeals to you in our showrooms in Bern and Zurich, where you can experience different systems side-by-side.

For technical details on the individual grouphead types, visit our subpages: E61 in Detail | Saturated Groupheads | Ring Grouphead | Hybrid Systems. Or use our consultation tool.