Double Boiler & Dual PID For the first time, the Rancilio Silvia is equipped with two boilers; one to heat water for brewing coffee, and another for hot water and steam. Brew more drinks back-to-back without waiting between steaming and brewing, or froth milk while you pull a shot. Larger than previous models, the 1L steam boiler give you professional-grade steaming power to create barista-quality milk foam. Create all your favorites from lattes to cappuccinos to flat whites. The Silvia Pro gives you fine control over water temperature in both boilers via internal PID, offering precise temperature stability and simple adjustment. Pro Features The Silvia Pro has a completely redesigned interface for a cleaner user experience. Temperature regulation is easier than ever with the integrated digital display, which displays the brew temperature in real time. Also new to this machine is programmable shot timing. Water level alerts let you know when the water reservoir needs refilled. A programmable wake-up mode ensures your machine is hot and ready when you want it. The built-in 2-liter water tank is easily removed for cleaning. While the Silvia Pro is larger than past models (15.5" depth compared to the 12" deep V5), it still has an impressively small footprint on your countertop considering it's jam-packed with new features.