The newest pod-adaptable version V2 of the Silvia comes with a brass boiler, brass lines and chromed brass brewing head all designed to maintain temperature and heat distribution and stability, critical factors for the perfect espresso. The newest pod-adaptable version V2 is optional. Please Note: The pod adapter will not allow you to switch back to ground coffee unless removed. The Rancilio Silvia continues to make waves among home coffee and espresso enthusiasts as one the best single boiler machines in production. Like more commercial brand machines, it's all in the brass components. Brass boiler, brass lines and chromed brass brewing head all help to maintain critical temperature and heat distribution allowing for optimal espresso extraction. The Silvia consistently delivers great espresso and steams milk beautifully for great lattes and cappuccinos. It's a beautiful addtion to your countertop and simple to use. This is a quality machine at a terrific price. Become the rock star barista of your own home.