On the CT1 nothing is concealed. The open boiler shows the hot water and the filter basket contains the ground coffee. After the portafilter has been connected to the machine, you lift the lever. Then, from the top, you carefully apply counter pressure. The first droplets of coffee appear and the extraction has begun.
As the espresso flows, it is clear how quiet the Strietman machines are. You can listen to the finest Maria Callas recording while silently pulling your shot.