Construction
The entire unit is constructed of strong and sturdy aluminum with particular attention paid to all finishes, particularly the satin, brushed finish. The machine measures 49.6W x 21.2D x 20.8H (inches) and weighs 295 lbs.

Control Panel
The semiautomatic controls of the Classe 10 S4 espresso machine are equipped with a "Soft Touch" panel to make brewing espresso just a push-button simple. The boiler pressure gauge located on the front panel is color coded for easy viewing. Rancilio's new patented optical boiler water level sensor is highly reliable and maintenance free.

Boiler
The Rancilio Classe 10 S4 has 22 liter copper boiler featuring a fully welded heat exchanger to generate flawless shots of espresso without any wait. Fully welded heat exchangers ensure that there will never be leaking gaskets to deal with down the road. The machine also includes features like- electronic boiler water level and an anti-syphon valve that prevents accidental milk infiltration into boiler.

Volumetric Pump
The Classe 10 S4 is equipped with a Procon volumetric pump to achieve precise pump pressure and consistent pour results every time.

Clever Steam Valve
The machine comes equipped with ‘Clever’ steam valve. It allows the barista to steam milk effortlessly without rotating any knobs. The ‘Clever’ has an ergonomic handle specially constructed for ease of use in multiple positions.

Drip Tray
The redesigned drip tray of the Classe 10 S4 features removable sections made of high quality scratch resistant polymers. The drip tray is easy to clean either with hand or in the dishwasher.

Pre-Infusion System
The machine features an expanded pre-infusion system to ensure the best flavor. It moistens and conditions the ground coffee, which maximizes flavor extraction to achieve that thick layer of crema on your espresso. The Classe 10 S4 allows you to dial in any amount of pre-infusion desired.

Advanced Boiler Management (ABM)
The ABM feature refers to the electronic control of the boiler and water system. The machine’s specially designed software enhances its performance by switching on the heating element concurrently with the brewing process, steaming or frothing of milk. The ABM technology aids in stabilizing the temperature by anticipating usage. It senses pressure fluctuations in the boiler and quickly maintains balance by modulating the heater.

V-FLEX
V-FLEX is a self-adapting system discovered to harmonize the operating voltage of your Classe 10 S4 with voltage variations in the main power supply. V-flex eliminates the fluctuation in the supplied voltage and avoids installation errors. Machines equipped with V-flex also feature an advanced diagnostics function known as Easy-Fix, allowing the technician to easily trace any technical problem and solve it quickly.

Accessories
The Rancilio Classe 10 S4 comes with a detailed instruction manual, 4 double and 4 single portafilter with baskets, 2 steam wands, 2 hot water dispensers, coffee tamper, measuring scoop, drain line and one meter stainless braided water line.