GS | 1970-1981
La Marzocco begins the production of the new GS series, which incorporates two important industry innovations: the use of independent boilers which isolate coffee brewing from steam and hot water production along with saturated groups. Both innovations vastly improve the thermo-stability of the machines. The letters “GS” stand for “gruppo saturo” or “saturated brewing groups”. While one boiler is used to generate hot water and steam (to make tea and froth milk), the other is dedicated to brewing espresso coffee. All La Marzocco equipment, from the introduction of the GS model, are equipped with the “dual” boiler and saturated brew group technology.
Functioning: automatic hydro-compression machine. Different versions with different starting systems were later produced – both manual and with solenoid valves. In the latter case, brewing could take place by means of an on-off switch or could be controlled by a timer.
Estimated production: 2,200-2,400 units (1, 2, 3 and 4-groups).
Small | 1978-1980
This machine, with its compact footprint (30x30x40cm), was the smallest machine produced by La Marzocco until 1980.
Functioning: equipped with two boilers and designed for semi-automatic (continuous) brewing only, it was created for counter surfaces with very limited depth.
Estimated production: 50 units.