Stone Espresso Stone

Stone is the espresso machine handmade in Milan by the eponymous brand, a spin-off of Rocket Espresso. The manufacturer states a 1.5-litre boiler heated by a 1000 W element and crossed by an internal coil that heats the coffee water separately (10 cc): the architecture is therefore a heat exchanger, not a pure single boiler. The brew group, described as a "heavy brass group" of over 3 kg, is regulated by a 200 W PID system to keep the brewing temperature stable.

The data sheet lists a 0.8-litre steam chamber for continuous steam supply even while brewing, a removable 1.2-litre water tank and an ECO mode. The manufacturer states a warm-up time of about 10 minutes despite the compact footprint of 22.5x44x35.5 cm and a weight of 20.5 kg. The machine is available in two electrical versions, 220-240 V 50/60 Hz for the European market and 115 V 60 Hz for the North American one.

Stone is offered in several finish combinations with stainless steel panels and interchangeable side panels (named Pure, Plus, Mine, Mine Premium and Mine Premium Wood): the manufacturer publishes a single technical table for this base configuration, identical across all colour combinations, so the differences between variants concern aesthetics rather than declared performance.