This is a very advanced espresso machine with innovative design. The separate brew head drew my attention at first. Then I realized it has one pump for coffee and one for steam. There is one heater for coffee and two for steam (the second one for drying the steam), all PID controlled. You can set the pre-brew time and the holding time before brewing, set hot water volume + set the brewing time, all displayed on an OLED screen. There is an OPV set at 9 bars and some sort of Silencer. The pumps are resting on on rubber brackets. The entire chassis is built entirely from steel, only the steel bar reinforced bottom part is plastic (+ an insulating box for the circuit board + the tank). The fiber glass main board has SMD components and three separate power Triacs controlling the three heaters and three Triacs controlling the solenoids for hot water, coffee and the 3WV. I am very impressed by the design and the build quality. This has to be the best quality/value machine on the market today.